CVE-2026-75048

In JetBrains YouTrack before 2026.2.18068 stored XSS via the fenced code-block language label was possible...

CVE-2026-75048

JetBrains YouTrack before 2026.2.18068 allows stored XSS via the fenced code-block language label; an unauthenticated attacker can inject JavaScript that executes in other users' browsers, scoring CVSS 8.2 HIGH. Exploitation status is not provided in the documents. Upgrade to YouTrack 2026.2.1806...

CVE-2026-75048: Improper Neutralization of Input During Web Page Generation

In JetBrains YouTrack before 2026.2.18068 stored XSS via the fenced code-block language label was possible...

PT-2026-76697

Name of the Vulnerable Software and Affected Versions JetBrains YouTrack versions prior to 2026.2.18068 Description Stored Cross-Site Scripting XSS is possible through the fenced code-block language label. Stored XSS occurs when an application receives data from a user and includes that data with...

WS-2026-0051

league/commonmark parsed several constructs in quadratic time, any of which can be abused for denial of service: catastrophic backtracking in the fenced code block start pattern made a single line of backticks quadratic; shortcut reference link lookups normalized arbitrarily long labels once one...

CVE-2026-70480: Server-Side Request Forgery (SSRF)

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.34 until 0.11.0, Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer browser without a restricted resource loader. Any user who can place such ...

CVE-2026-53428

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comraknif::lumisadapter::LumisAdapter::parsehighlightlines in native/comraknif/src/lumisadapter.rs eagerly expands a...

CVE-2026-53428

Summary: The CVE describes an unbounded memory allocation in the mdex/native codepath when parsing a user-supplied highlight_lines range in Markdown code blocks, enabling a denial-of-service via memory exhaustion. The affected components are mdex (v0.11.0 before 0.12.3) and mdex_native (v0.1.0 be...

CVE-2026-53428 Unbounded memory allocation in highlight_lines range expansion in mdex

Memory Allocation with Excessive Size Value vulnerability in leandrocp mdex allows an unauthenticated attacker to cause a denial of service through unbounded memory allocation. comraknif::lumisadapter::LumisAdapter::parsehighlightlines in native/comraknif/src/lumisadapter.rs eagerly expands a...

CVE-2026-49493

Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJS, which evaluates the block content as code via vm.runInNewContext, allowing arbitrary code execution. A crafted markdown document containing a malicious bitfield code block executes attacker-controlled cod...

CVE-2026-49493: Improper Control of Generation of Code

Markdown Preview Enhanced before 0.8.28 parses Bitfield fenced code blocks with interpretJS, which evaluates the block content as code via vm.runInNewContext, allowing arbitrary code execution. A crafted markdown document containing a malicious bitfield code block executes attacker-controlled cod...

PT-2026-30289

Summary to markdown is vulnerable when serializing attacker-controlled content. The handler emits a fixed three-backtick fenced code block, but writes decoded text content into that fence without choosing a delimiter longer than any backtick run inside the content. An attacker can place backticks...

Security update for python-markdown2 (moderate)

openSUSE Security Update: Security update for python-markdown2 Announcement ID: openSUSE-SU-2021:0429-1 Rating: moderate References: 1171379 1181270 1183171 Cross-References: CVE-2021-26813 CVSS scores: CVE-2021-26813 NVD : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected Products:...