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🛡️ RUSTSEC-2025-0071 — ammonia

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

Description

Incorrect handling of embedded SVG and MathML leads to mutation XSS after removal

Affected versions of this crate did not correctly strip namespace-incompatible tags

in certain situations, causing it to incorrectly account for differences between HTML,

SVG, and MathML.

This vulnerability only has an effect when the svg or math tag is allowed,

because it relies on a tag being parsed as html during the cleaning process, but

serialized in a way that causes in to be parsed as xml by the browser.

Additionally, the application using this library must allow a tag that is parsed as raw text in HTML.

These [elements] are:

  • title
  • textarea
  • xmp
  • iframe
  • noembed
  • noframes
  • plaintext
  • noscript
  • style
  • script

Applications that do not explicitly allow any of these tags should not be affected, since none are allowed by default.

[elements]: https://github.com/servo/html5ever/blob/57eb334c0ffccc6f88d563419f0fbeef6ff5741c/html5ever/src/tree_builder/rules.rs

Affected software

RUSTSEC-2025-0071 is recorded against 1 package.

  • ammonia

Timeline and source

Published on 21 September 2025 and last revised on 28 October 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

crates.io (Package)
rustsec.org (Advisory)

Other advisories for this package

ammonia 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 2025-09-21
Updated 2026-08-20
Modified 2025-10-28
Fix URL N/A

Affected Packages

Software From version Fixed in
ammonia — —

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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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