Weakness (CWE)
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.
How to prevent it (4 mitigations)
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Implementation
Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. We often encounter data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.
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Implementation
Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
The problem of inconsistent output encodings often arises in web pages. If an encoding is not specified in an HTTP header, web browsers often guess about which encoding is being used. This can open up the browser to subtle XSS attacks.
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Implementation
With Struts, write all data from form beans with the bean's filter attribute set to true.
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Implementation
To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is not supported by all browsers. More importantly, XmlHttpRequest and other powerful browser technologies provide read access to HTTP headers, including the Set-Cookie header in which the HttpOnly flag is set.
Source: MITRE CWE-80
693 results · Feed
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Low 3.5
TrueConf Server group DOM cross site scripting
A vulnerability was found in TrueConf Server 4.3.7. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/group. The manipulation leads to basic cross site scripting (DOM). The attack can be launche…
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Low 3.5
TrueConf Server Reflected cross site scripting
A vulnerability was found in TrueConf Server 4.3.7. It has been classified as problematic. Affected is an unknown function of the file /admin/group/list/. The manipulation of the argument checked_group_id leads to basic cross site scripting (Reflected). It is…
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Low 3.5
TrueConf Server Reflected cross site scripting
A vulnerability was found in TrueConf Server 4.3.7 and classified as problematic. This issue affects some unknown processing of the file /admin/conferences/list/. The manipulation of the argument sort leads to basic cross site scripting (Reflected). The attac…
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Low 3.5
TrueConf Server Reflected cross site scripting
A vulnerability has been found in TrueConf Server 4.3.7 and classified as problematic. This vulnerability affects unknown code of the file /admin/conferences/get-all-status/. The manipulation of the argument keys[] leads to basic cross site scripting (Reflect…
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Low 3.5
TrueConf Server Stored cross site scripting
A vulnerability, which was classified as problematic, was found in TrueConf Server 4.3.7. This affects an unknown part. The manipulation leads to basic cross site scripting (Stored). It is possible to initiate the attack remotely. The exploit has been disclos…
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Low 3.5
Easy Table Plugin options-general.php cross site scripting
A vulnerability classified as problematic has been found in Easy Table Plugin 1.6. This affects an unknown part of the file /wordpress/wp-admin/options-general.php. The manipulation with the input "><script>alert(1)</script> leads to basic cross site scriptin…
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Low 3.5
Admin Custom Login Plugin Persistent cross site scripting
A vulnerability was found in Admin Custom Login Plugin 2.4.5.2. It has been classified as problematic. Affected is an unknown function. The manipulation leads to basic cross site scripting (Persistent). It is possible to launch the attack remotely.
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Low 3.5
Air Transfer cross site scripting
A vulnerability was found in Air Transfer 1.0.14/1.2.1. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads to basic cross site scripting. The attack may be launched remotely. The exploit has been dis…
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Critical 9.6
Cross Site Scripting in Wire Messages
Wire is a secure messaging application. Wire is vulnerable to arbitrary HTML and Javascript execution via insufficient escaping when rendering `@mentions` in the wire-webapp. If a user receives and views a malicious message, arbitrary code is injected and exe…
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Low 3.5
WP-Filebase Download Manager Plugin cross site scriting
A vulnerability was found in WP-Filebase Download Manager Plugin 3.4.4. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads to basic cross site scripting. The attack may be launched remotely.
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Low 3.5
WP-SpamFree Anti-Spam Plugin cross site scriting
A vulnerability classified as problematic has been found in WP-SpamFree Anti-Spam Plugin 2.1.1.4. This affects an unknown part. The manipulation leads to basic cross site scripting. It is possible to initiate the attack remotely.
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Low 3.5
NewStatPress Plugin Persistent cross site scriting
A vulnerability, which was classified as problematic, has been found in NewStatPress Plugin 1.2.4. This issue affects some unknown processing. The manipulation leads to basic cross site scripting (Persistent). The attack may be initiated remotely. Upgrading t…
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Low 3.5
Google Analytics Dashboard Plugin cross site scriting
A vulnerability classified as problematic was found in Google Analytics Dashboard Plugin 2.1.1. Affected by this vulnerability is an unknown functionality. The manipulation leads to basic cross site scripting. The attack can be launched remotely.
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Low 3.5
Gwolle Guestbook Plugin cross site scriting
A vulnerability was found in Gwolle Guestbook Plugin 1.7.4. It has been rated as problematic. This issue affects some unknown processing. The manipulation leads to basic cross site scripting. The attack may be initiated remotely.
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Low 3.5
Alpine PhotoTile for Instagram Plugin cross site scriting
A vulnerability, which was classified as problematic, has been found in Alpine PhotoTile for Instagram Plugin 1.2.7.7. Affected by this issue is some unknown functionality. The manipulation leads to basic cross site scripting. The attack may be launched remot…
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Low 3.5
Atahualpa Theme cross site scriting
A vulnerability has been found in Atahualpa Theme and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to basic cross site scripting. The attack can be launched remotely.
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Medium 4.3
Elefant CMS extended Reflected cross site scriting
A vulnerability has been found in Elefant CMS 1.3.12-RC and classified as problematic. This vulnerability affects unknown code of the file /admin/extended. The manipulation of the argument name with the input %3Cimg%20src=no%20onerror=alert(1)%3E leads to bas…
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Low 3.5
Elefant CMS Blog Post Persistent cross site scriting
A vulnerability, which was classified as problematic, was found in Elefant CMS 1.3.12-RC. This affects an unknown part of the component Blog Post Handler. The manipulation leads to basic cross site scripting (Persistent). It is possible to initiate the attack…
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Low 3.5
Elefant CMS Title Persistent cross site scriting
A vulnerability, which was classified as problematic, has been found in Elefant CMS 1.3.12-RC. Affected by this issue is some unknown functionality of the component Title Handler. The manipulation with the input </title><img src=no onerror=alert(1)> leads to …
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Medium 4.3
Elefant CMS Version Comparison Persistent cross site scriting
A vulnerability classified as problematic was found in Elefant CMS 1.3.12-RC. Affected by this vulnerability is an unknown functionality of the component Version Comparison. The manipulation leads to basic cross site scripting (Persistent). The attack can be …
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Medium 4.3
Elefant CMS Persistent cross site scriting
A vulnerability classified as problematic has been found in Elefant CMS 1.3.12-RC. Affected is an unknown function. The manipulation of the argument username leads to basic cross site scripting (Persistent). It is possible to launch the attack remotely. Upgra…
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Low 3.5
weblizar User Login Log Plugin Stored cross site scriting
A vulnerability was found in weblizar User Login Log Plugin 2.2.1. It has been classified as problematic. Affected is an unknown function. The manipulation leads to basic cross site scripting (Stored). It is possible to launch the attack remotely. The exploit…
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Low 3.5
BestWebSoft Contact Form Plugin Stored cross site scriting
A vulnerability classified as problematic has been found in BestWebSoft Contact Form Plugin 4.0.0. This affects an unknown part. The manipulation leads to basic cross site scripting (Stored). It is possible to initiate the attack remotely. The exploit has bee…
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Low 3.5
XYZScripts Contact Form Manager Plugin cross site scriting
A vulnerability was found in XYZScripts Contact Form Manager Plugin. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads to basic cross site scripting. The attack may be launched remotely. The exploit…
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Medium 4.3
Navetti PricePoint Reflected cross site scriting
A vulnerability was found in Navetti PricePoint 4.6.0.0. It has been classified as problematic. This affects an unknown part. The manipulation leads to basic cross site scripting (Reflected). It is possible to initiate the attack remotely. Upgrading to versio…
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Medium 4.3
Navetti PricePoint Persistent cross site scriting
A vulnerability was found in Navetti PricePoint 4.6.0.0 and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to basic cross site scripting (Persistent). The attack may be launched remotely. Upgrading to v…
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Low 3.5
Thomson TCW710 RgUrlBlock.asp Persistent cross site scriting
A vulnerability was found in Thomson TCW710 ST5D.10.05. It has been declared as problematic. This vulnerability affects unknown code of the file /goform/RgUrlBlock.asp. The manipulation of the argument BasicParentalNewKeyword with the input ><script>alert(1)<…
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Low 3.5
Thomson TCW710 RgDhcp Persistent cross site scriting
A vulnerability was found in Thomson TCW710 ST5D.10.05. It has been classified as problematic. This affects an unknown part of the file /goform/RgDhcp. The manipulation of the argument PppUserName with the input ><script>alert(1)</script> as part of POST Requ…
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Low 3.5
Thomson TCW710 RgDdns Persistent cross site scriting
A vulnerability was found in Thomson TCW710 ST5D.10.05 and classified as problematic. Affected by this issue is some unknown functionality of the file /goform/RgDdns. The manipulation of the argument DdnsHostName with the input ><script>alert(1)</script> as p…
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Low 3.5
Thomson TCW710 RgTime Persistent cross site scriting
A vulnerability has been found in Thomson TCW710 ST5D.10.05 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /goform/RgTime. The manipulation of the argument TimeServer1/TimeServer2/TimeServer3 with the inp…
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Low 3.5
Thomson TCW710 RGFirewallEL Persistent cross site scriting
A vulnerability, which was classified as problematic, was found in Thomson TCW710 ST5D.10.05. Affected is an unknown function of the file /goform/RGFirewallEL. The manipulation of the argument EmailAddress/SmtpServerName with the input ><script>alert(1)</scri…
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Low 3.5
Thomson TCW710 wlanPrimaryNetwork Persistent cross site scripting
A vulnerability, which was classified as problematic, has been found in Thomson TCW710 ST5D.10.05. This issue affects some unknown processing of the file /goform/wlanPrimaryNetwork. The manipulation of the argument ServiceSetIdentifier with the input ><script…
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High —
Cross Site Scripting vulnerability in django-jsonform's admin form.
### Description django-jsonform stores the raw JSON data of the db field in a hidden textarea on the admin page. However, that data was kept in the textarea after unescaping it using the `safe` template filter. This opens up possibilities for XSS attacks. Thi…
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Low 3.5
PHPList Bounce Rule Persistent cross site scriting
A vulnerability, which was classified as problematic, was found in PHPList 3.2.6. Affected is an unknown function of the file /lists/admin/ of the component Bounce Rule. The manipulation leads to cross site scripting (Persistent). It is possible to launch the…
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Low 3.5
PHPList Subscribe Persistent cross site scriting
A vulnerability, which was classified as problematic, has been found in PHPList 3.2.6. This issue affects some unknown processing of the file /lists/admin/ of the component Subscribe. The manipulation leads to cross site scripting (Persistent). The attack may…
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Low 3.5
PHPList List Name Persistent cross site scriting
A vulnerability classified as problematic was found in PHPList 3.2.6. This vulnerability affects unknown code of the file /lists/admin/ of the component List Name. The manipulation leads to cross site scripting (Persistent). The attack can be initiated remote…
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Medium 4.3
PHPList Reflected cross site scriting
A vulnerability classified as problematic has been found in PHPList 3.2.6. This affects an unknown part of the file /lists/admin/. The manipulation of the argument page with the input send\'\";><script>alert(8)</script> leads to cross site scripting (Reflecte…
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Medium 4.3
HumHub DOM cross site scriting
A vulnerability was found in HumHub up to 1.0.1 and classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to cross site scripting (DOM). The attack may be launched remotely. The exploit has been disclosed to t…
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Medium 4.3
HumHub Reflected cross site scriting
A vulnerability has been found in HumHub up to 1.0.1 and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation leads to cross site scripting (Reflected). The attack can be launched remotely. The exploit has be…
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Low 3.5
WolfCMS User Add cross site scripting
** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in WolfCMS up to 0.8.3.1. It has been rated as problematic. This issue affects some unknown processing of the file /wolfcms/?/admin/user/add of the component User Add. The manipulation of the argument …