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

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

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-2026-53428

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 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...

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:...