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🛡️ USN-8194-1 — php-league-commonmark (CVE-2025-46734 +2 more)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

php-league-commonmark vulnerabilities

It was discovered that league/commonmark did not properly restrict

unsafe attributes when the Attributes extension was enabled. An attacker

could possibly use this issue to cause cross-site scripting by injecting

malicious code into rendered HTML. This issue only affected Ubuntu 22.04

LTS and Ubuntu 24.04 LTS. (CVE-2025-46734)

It was discovered that league/commonmark did not properly block certain

disallowed HTML tags in some cases. An attacker could possibly use this

issue to cause cross-site scripting by inserting malicious HTML that

bypassed filtering. (CVE-2026-30838)

It was discovered that league/commonmark did not properly enforce domain

allowlist checks in the Embed extension. An attacker could possibly use

this issue to bypass domain restrictions and cause untrusted content to

be treated as allowed. This issue only affected Ubuntu 24.04 LTS.

(CVE-2026-33347)

Affected software

USN-8194-1 is recorded against 1 package.

  • php-league-commonmark (fixed in 2.4.2-2ubuntu0.1~esm1)

Timeline and source

Published on 21 April 2026 and last revised on 27 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Advisory)
ubuntu.com (Report)
ubuntu.com (Report)
ubuntu.com (Report)

Other advisories for this package

php-league-commonmark has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-04-21
Updated 2026-08-20
Modified 2026-04-27
Fix URL N/A

Affected Packages

Software From version Fixed in
php-league-commonmark — 2.4.2-2ubuntu0.1~esm1

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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