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OpenAdvisories

Vendor

Joomla! Project

140 known vulnerabilities.

Joomla! Project at a glance

Last 12 months
66
Critical · all time
4
Exploited · all time
1
Public exploit · all time
8
New vulnerabilities per month · last 12 months
0 10 20 December 2025: 0 vulnerabilities Dec 2025 January 2026: 2 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 6 vulnerabilities May 2026: 20 vulnerabilities, 1 critical June 2026: 0 vulnerabilities Jun July 2026: 12 vulnerabilities August 2026: 10 vulnerabilities September 2026: 16 vulnerabilities Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
Show as table
MonthVulnerabilitiesCritical
Nov 202600
Oct 202600
Sep 2026160
Aug 2026100
Jul 2026120
Jun 202600
May 2026201
Apr 202660
Mar 202600
Feb 202600
Jan 202620
Dec 202500
Nov 202500
Oct 202500
Sep 202520
Aug 202500
Jul 202500
Jun 202500
May 202500
Apr 202521
Mar 202510
Feb 202510
Jan 202530
Dec 202400

140 results · Feed

  • High 7.0

    Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260905] - Core - Arbitrary directory deletion via cache purge action in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 -An improper validation of the cache group name allowed path traverals in the file storage of the caching layer, resulting in arbitrary d…

  • High 7.0

    Joomla! Core - [20260913] - Core - Improper ACL checks for varous webservice edit tasks in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260913] - Core - Improper ACL checks for varous webservice edit tasks in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to perform edit actions on otherwise uneditable items.

  • Medium 5.9

    Joomla! Core - [20260911] - Core - XSS in link toolbar layout in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260911] - Core - XSS in link toolbar layout in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The link toolbar layout did not properly escape inputs, leading to an XSS vector.

  • Medium 6.9
    CVE-2026-90907 Public exploit

    Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save controller in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save controller in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The profile.save controller did not check the login state of a user, allowing the creation of guest-level users on sites wit…

  • Medium 5.9

    Joomla! Core - [20260904] - Core - XSS in the generic media output layouts in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260904] - Core - XSS in the generic media output layouts in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to an XSS vulnerability in the generic audio and video output layouts.

  • High 7.1

    Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the "javascript:" scheme regex, however…

  • Medium 6.9

    Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The mail template feature lacks an escaping mechanism, causing XSS vectors in multiple extensions.

  • High 8.9

    Joomla! Core - [20260909] - Core - SSRF vectors in various core extensions in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260909] - Core - SSRF vectors in various core extensions in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - URLs used for serverside requests were improperly validated, leading to SSRF vectors.

  • Medium 5.1

    Joomla! Core - [20260910] - Core - Improper ACL checks for workflow stage changes in Joomla 5.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260910] - Core - Improper ACL checks for workflow stage changes in Joomla 5.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to update the workflow stage of inaccessible contents.

  • Medium 6.9

    Joomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260907] - Core - Improper ACL checks in outputs for tagged items in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to view content items from inaccessible categories.

  • Medium 5.9

    Joomla! Core - [20260912] - Core - XSS in module list in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260912] - Core - XSS in module list in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The module list layout did not properly escape user supplied values, leading to an XSS vector.

  • High 8.2

    Joomla! Core - [20260914] - Core - MFA Authentication Bypass through rememberme cookies in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260914] - Core - MFA Authentication Bypass through rememberme cookies in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The premature issuance of an rememberme cookie leads to a MFA bypass vulnerability.

  • High 7.1

    Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The cleanAttribute method removes HTML data URIs, however injected whitespaces characters could circumvent tha…

  • Medium 5.1

    Joomla! Core - [20260906] - Core - Improper ACL checks in content history comparison view in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260906] - Core - Improper ACL checks in content history comparison view in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to view inaccessible contents.

  • High 7.0

    Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoints in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoints in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to perform mutation actions in access level endpoints.

  • Medium 5.9

    Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3

    Joomla! Core - [20260901] - XSS in HTMLHelper::link method in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - Lack of escaping leads to XSS vulnerabilities in the link method of the HTML Helper.

  • Medium 6.9

    Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper implementation prevented configured CORS origins from being properly validated in CORS requests.

  • Medium 5.1

    Joomla! Core - [20260804] - Improper ACL checks for custom fields webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260804] - Improper ACL checks for custom fields webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to create fields for inaccessible components.

  • Medium 5.1

    Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260806] - XSS through schema.org outputs in Joomla 5.1.0-5.4.7, 6.0.0-6.1.2 - Improper escaping flags lead to an XSS vector in schema.org markup outputs.

  • Medium 5.1

    Joomla! Core - [20260809] - Improper ACL checks when injection schema.org contact data in Joomla 5.1.0-5.4.7 and 6.0.0-6.1.2

    Joomla! Core - [20260809] - Improper ACL checks when injection schema.org contact data in Joomla 5.1.0-5.4.7 and 6.0.0-6.1.2 - An improper access check injects contact information for unaccessible contact items into schema.org snippets.

  • Medium 4.8

    Joomla! Core - [20260801] - Response header injection in download views in Joomla 3.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260801] - Response header injection in download views in Joomla 3.0.0-5.4.7, 6.0.0-6.1.2 - Lack of output processing allowed a header injection in the multiple download views, leading to reflected file download / content-type confusion.

  • High 8.2

    Joomla! Core - [20260807] - MFA Authentication Bypass in Joomla 4.0.0-5.4.7 and 6.0.0-6.1.2

    Joomla! Core - [20260807] - MFA Authentication Bypass in Joomla 4.0.0-5.4.7 and 6.0.0-6.1.2 - Insufficient state checks lead to a vector that allows to bypass 2FA checks.

  • Medium 5.1

    Joomla! Core - [20260808] - Improper ACL checks for batch copy actions in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260808] - Improper ACL checks for batch copy actions in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to perform copy batch operations on uneditable items.

  • Medium 5.1

    Joomla! Core - [20260805] - Improper ACL checks for category webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260806] - Improper ACL checks for category webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to create categories via webservices endpoints.

  • High 8.9
    CVE-2026-73373 Public exploit

    Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution.

  • High 8.5

    Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

    Joomla! Core - [20260803] - Inconsistent ACL checks for mutating webservice endpoints in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper access check allows unauthorized users to perform mutation actions in webservice endpoints, where the same mutation was rest…

  • Medium 5.9

    Joomla! Core - [20260706] - XSS in com_installer

    Lack of escaping leads to an XSS vulnerability in the update list view of com_installer.

  • Medium 6.4

    Joomla! Core - [20260701] - Incorrect Access Control in com_media webservice endpoints

    An improper access check allows privileged users to overwrite media files without editing permissions.

  • Medium 6.4

    Joomla! Core - [20260712] - Incorrect Access Control in com_fields webservice endpoints

    An improper access check allows unauthorized users to create custom fields via webservices endpoints.

  • Medium 5.9

    Joomla! Core - [20260704] - XSS in com_templates

    Lack of escaping leads to an XSS vulnerability in the file management view of com_templates.

  • Medium 6.4

    Joomla! Core - [20260709] - Incorrect Access Control in com_workflow

    An improper access check allows unauthorized users to access workflow stage and transition information.

  • Medium 6.4

    Joomla! Core - [20260710] - Incorrect Access Control in com_modules

    An improper access check allows users to display a list of modules in the frontend.

  • Medium 6.4

    Joomla! Core - [20260711] - Incorrect Access Control in com_privacy webservice endpoints

    An improper access check allows unauthorized users to access com_privacy datasets.

  • Medium 5.9

    Joomla! Core - [20260705] - XSS in various modalreturn layouts

    Lack of escaping leads to XSS vulnerabilities in modalreturn layouts of various components.

  • Medium 5.9

    Joomla! Core - [20260707] - XSS in the generic image output layout

    Lack of escaping leads to an XSS vulnerability in the generic image output layout.

  • Medium 6.4

    Joomla! Core - [20260702] - Incorrect Access Control in com_contact vcf download

    An improper access check allows user to download vcard exports of com_contact contacts that are inaccessible.

  • Medium 5.9

    Joomla! Core - [20260703] - XSS in MFA method management

    Lack of validation leads to an XSS vulnerability in the MFA management views.

  • Medium 5.9

    Joomla! Core - [20260708] - XSS through language overrides

    Improper validation leads to a generic XSS vector in the language override feature.

  • Medium 6.9

    Joomla! Core - [20260506] - Authenticated blind SQLi in com_finder

    Improperly built filter clauses lead to a SQL injection vulnerability in the search query for com_finder.

  • Medium 6.9

    Joomla! Framework - [20260519] - Inadequate content filtering within the checkAttribute filter code.

    Inadequate content filtering within the checkAttribute methods leads to XSS vulnerabilities in various components.