Skip to content
Fencer Intel
medium 5.4

CVE-2026-102342 json

ammonia allows stored XSS through unsanitized SVG animate and set attributes

published 3mo ago modified 24d ago also EUVD-2026-98766 , GHSA-m6mh-2hw2-555x , RUSTSEC-2026-0213

cvss
5.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

ammonia is a Rust library for repairing and securing untrusted HTML. Prior to 3.3.3, 4.0.3, and 4.1.4, applications that allow the SVG animate or set elements can retain an animation whose attributeName targets href and whose value uses the javascript scheme. The sanitized SVG can therefore create a script-bearing link, and a user who clicks the link can execute attacker-controlled script in the application's origin, enabling stored cross-site scripting. This issue is fixed in versions 3.3.3, 4.0.3, and 4.1.4.

Patch / fix

  • crates.io ammonia 3.3.3, 4.0.3, 4.1.4
  • ammonia_project ammonia 3.3.3, 4.0.3, 4.1.4
  • rust-ammonia Debian 14 4.1.4-1

debian advisories DEBIAN-CVE-2026-102342

Is CVE-2026-102342 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-102342 updated cvss 5.4

ammonia: ammonia: Stored cross-site scripting via SVG animation elements

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-backend-rhel9 Red Hat Ansible Automation Platform 2 python3.12-nh3 0.3.6-1.el9ap, python3.11-nh3 0.2.18-1.el9ap, ansible-automation-platform-26/hub-rhel9, ansible-automation-platform-26/controller-rhel9 Red Hat Enterprise Linux 8 rls, rust, cargo, clippy, rustfmt, rust-gdb, +8 more Red Hat Enterprise Linux 9 rust, cargo, clippy, rustfmt, rust-gdb, rust-src, +9 more Red Hat Enterprise Linux 10 rust 1.84.1-1.el10_0.4 Red Hat Satellite 6 python3.12-nh3 0.3.6-1.el9ap
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-27/hub-rhel9, ansible-automation-platform-26/gateway-rhel9, ansible-automation-platform-27/gateway-rhel9, ansible-automation-platform-27/controller-rhel9, ansible-automation-platform-26/eda-controller-rhel9, ansible-automation-platform-27/eda-controller-rhel9, +3 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
27d ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
crates.io ammonia
<3.3.3
>=4.0.0, <4.0.3
>=4.1.2, <4.1.4
>=0.0.0-0, <3.3.3
>=4.1.0, <4.1.4
3.3.3
4.0.3
4.1.4

Affected products

  • rust-ammonia ammonia

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.