Quick answers
- Is CVE-2026-102342 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-102342 being exploited in the wild.
- How severe is CVE-2026-102342?
- Medium severity, with a CVSS score of 5.4, published 13 October 2026.
- Which products and versions are affected?
- Ammonia Project Ammonia < 3.3.2, >= 4.0.0 and <= 4.0.2, >= 4.1.2 and <= 4.1.3; ammonia (crates.io) SEMVER:introduced=0,fixed=3.3.3.
- Is there a fix for CVE-2026-102342?
- Yes. ammonia (crates.io): upgrade to 3.3.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-102342 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-102342?
- Check whether you run Ammonia Project Ammonia or ammonia (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- ammonia (crates.io): upgrade to 3.3.3 or later
cargo update -p ammonia
Technical details
Ammonia fails to strip or neutralize the SVG animate and set elements when they manipulate link href attributes to javascript: schemes. An unauthenticated network attacker with low privileges can store malicious SVG markup; when a user clicks the resulting link, the JavaScript executes in their browser context. Patches exist in versions 3.3.3, 4.0.3, and 4.1.4.
Affected products
- Ammonia Project Ammonia < 3.3.2, >= 4.0.0 and <= 4.0.2, >= 4.1.2 and <= 4.1.3
Identifiers
- CVE-2026-102342
- GHSA-m6mh-2hw2-555x
Timeline
- 2026-09-29: disclosed