Weakness (CWE)
CWE-82: Improper Neutralization of Script in Attributes of IMG Tags in a Web Page
The web application does not neutralize or incorrectly neutralizes scripting elements within attributes of HTML IMG tags, such as the src attribute.
How to prevent it (2 mitigations)
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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
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-82
8 results · Feed
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Medium 5.3
Zammad: Improper neutralization of `srcset` attribute in IMG tags in Zammad
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2 and 7.1.0, zammad's HTML sanitizer (HtmlSanitizer::Strict) blocks external URLs in to prevent remote content loading, but the srcset attribute, also allowlisted for , is not su…
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High 8.5
WordPress JetEngine <= 3.7.0 - Remote Code Execution (RCE) Vulnerability
Deserialization of Untrusted Data vulnerability in Crocoblock JetEngine jet-engine allows Code Injection.This issue affects JetEngine: from n/a through <= 3.7.0.
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Critical 9.9
WordPress Event Tickets with Ticket Scanner plugin <= 2.3.11 - Remote Code Execution (RCE) vulnerability
Deserialization of Untrusted Data vulnerability in Vollstart Event Tickets with Ticket Scanner event-tickets-with-ticket-scanner allows Server Side Include (SSI) Injection.This issue affects Event Tickets with Ticket Scanner: from n/a through <= 2.3.11.
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Critical 9.1
WordPress Popup by Supsystic plugin <= 1.10.29 - Remote Code Execution (RCE) vulnerability
Deserialization of Untrusted Data vulnerability in supsystic Popup by Supsystic popup-by-supsystic allows Command Injection.This issue affects Popup by Supsystic: from n/a through <= 1.10.29.
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Critical 9.1
WordPress Podlove Podcast Publisher plugin <= 4.1.15 - Admin+ Remote Code Execution (RCE) vulnerability
Deserialization of Untrusted Data vulnerability in Eric Teubert Podlove Podcast Publisher podlove-podcasting-plugin-for-wordpress.This issue affects Podlove Podcast Publisher: from n/a through <= 4.1.15.
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Critical 9.1
WordPress Contact Form by Supsystic plugin <= 1.7.28 - Remote Code Execution (RCE) vulnerability
Deserialization of Untrusted Data vulnerability in supsystic Contact Form by Supsystic contact-form-by-supsystic allows Command Injection.This issue affects Contact Form by Supsystic: from n/a through <= 1.7.28.
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Critical 9.1
WordPress Unlimited Elements For Elementor (Free Widgets, Addons, Templates) plugin <= 1.5.121 - Remote Code Execution (RCE) vulnerability
Deserialization of Untrusted Data vulnerability in Unlimited Elements Unlimited Elements For Elementor (Free Widgets, Addons, Templates) unlimited-elements-for-elementor allows Command Injection.This issue affects Unlimited Elements For Elementor (Free Widget…
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Medium 5.4
Stored XSS in Foundry Slate Query Dropdown menu
A security defect was discovered in Foundry Frontend which enabled users to perform Stored XSS attacks in Slate if Foundry's CSP were to be bypassed. This defect was resolved with the release of Foundry Frontend 6.229.0. The service was rolled out to all affe…