PT-2026-93250

Name of the Vulnerable Software and Affected Versions a2ui-project a2ui versions prior to 0.10.8 Description A flaw in the a2a-chat-canvas component allows a remote attacker to perform cross-site scripting XSS, a technique where malicious scripts are injected into trusted websites. The issue...

CVE-2026-92214: Improper Neutralization of Input During Web Page Generation

A flaw has been found in a2ui-project a2ui up to 0.10.7. Affected is an unknown function of the file samples/community/client/angular/projects/a2a-chat-canvas/src/lib/services/sanitizer-markdown-renderer-service.ts of the component a2a-chat-canvas. Executing a manipulation can lead to cross site...

CVE-2026-63671: Improper Neutralization of Input During Web Page Generation

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. Prior to 0.22.1, @nuxtjs/mdc uses parseMarkdown with allowDangerousHtml enabled by default and relies on validateProps, validateProp, and unsafeLinkPrefix to remove executable URLs from untrusted...

CVE-2026-78252: Improper Neutralization of Input During Web Page Generation

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.3 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that, under certain conditions, an authenticated user could have induced a targeted user to perform unintended state-changing HTTP requests due to improper...

CVE-2026-90835

A flaw has been found in michaelliao itranswarp up to 2.19. The impacted element is the function Markdown.toHtml of the file Markdown.java of the component Page Content Rendering. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been published a...

CVE-2026-90835

A cross-site scripting (XSS) vulnerability exists in michaelliao itranswarp (up to version 2.19), specifically in the function Markdown.toHtml within Markdown.java under the Page Content Rendering component. The flaw allows a remote attacker to inject scripts via crafted page content. The exploit...

CVE-2026-90835 michaelliao itranswarp Page Content Rendering Markdown.java Markdown.toHtml cross site scripting

A flaw has been found in michaelliao itranswarp up to 2.19. The impacted element is the function Markdown.toHtml of the file Markdown.java of the component Page Content Rendering. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been published a...

CVE-2024-58382

A flaw was found in league/commonmark. A remote attacker could exploit polynomial time complexity vulnerabilities in the Markdown parsing component by submitting carefully crafted Markdown inputs. This could lead to a Denial of Service DoS by exhausting CPU resources and PHP-FPM processes when...

CVE-2026-86349

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.8, 10.11.x = 10.11.22 fail to limit the nesting depth in the server-side Markdown parser which allows an authenticated attacker to cause a denial of service CPU resource exhaustion via a crafted post containing deeply nested...

EUVD-2026-77480

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.8, 10.11.x = 10.11.22 fail to limit the nesting depth in the server-side Markdown parser which allows an authenticated attacker to cause a denial of service CPU resource exhaustion via a crafted post containing deeply nested...

CVE-2026-86349 Mattermost Server Algorithmic DoS via Unbounded Markdown Block Nesting

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.8, 10.11.x = 10.11.22 fail to limit the nesting depth in the server-side Markdown parser which allows an authenticated attacker to cause a denial of service CPU resource exhaustion via a crafted post containing deeply nested...

CVE-2026-86349

Mattermost server versions 11.9.x ≤ 11.9.0, 11.8.x ≤ 11.8.4, 11.7.x ≤ 11.7.8, and 10.11.x ≤ 10.11.22 are affected by an algorithmic denial of service in the server-side Markdown parser. The root cause is a failure to limit nesting depth , allowing an authenticated attacker to exhaust CPU resource...

CVE-2026-86349 Mattermost Server Algorithmic DoS via Unbounded Markdown Block Nesting

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.8, 10.11.x = 10.11.22 fail to limit the nesting depth in the server-side Markdown parser which allows an authenticated attacker to cause a denial of service CPU resource exhaustion via a crafted post containing deeply nested...

Astra Linux – Vulnerabilities in Python 2.7, Python 3.11, Python 3.7

Python-Markdown version 3.8 contains a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Since Python-Markdown does not catch this exception, any application that processes Markdown controlled by...

Astra Linux – Vulnerability in Jinja2

This issue affects the Jinja2 package versions starting from 0.0.0 and earlier than 2.11.3. The ReDoS vulnerability is primarily caused by the punctuationre regex operator and its use of multiple wildcards. The last wildcard is the most exploitable, as it is used to search for trailing punctuatio...

Astra Linux – Vulnerability in md4c

The mdanalyzeline function in md4c.c, within md4c 0.4.7, allows attackers to trigger the use of uninitialized memory, thereby causing a denial of service through a malformed Markdown document...

Astra Linux – Vulnerability in node-marked

Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression block.def might cause catastrophic backtracking against certain strings, leading to a regular expression denial of service ReDoS attack. Any user who runs untrusted markdown using a vulnerable version of...

Astra Linux – Vulnerability in node-marked

Marked is a markdown parser and compiler. Prior to version 4.0.10, the regular expression inline.reflinkSearch might cause catastrophic backtracking for certain strings, leading to a denial of service DoS attack. Any user who runs untrusted markdown using a vulnerable version of Marked, without...

CVE-2026-12882

Mattermost versions 11.9.x = 11.9.0, 11.8.x = 11.8.4, 11.7.x = 11.7.7, 10.11.x = 10.11.22 fail to parse Markdown autolinks with unmatched trailing closing parentheses in linear time, which allows an authenticated user with permission to create posts to cause excessive server CPU consumption and...

CVE-2026-12882

Mattermost is affected by a denial of service vulnerability in its Markdown autolink parsing (CVE-2026-12882, MMSA-2026-00703). The parser fails to handle autolinks with unmatched trailing closing parentheses in linear time, allowing an authenticated user with post-creation permission to trigger ...