An issue was discovered in the ammonia crate before 3.1.0 for Rust.
Priority LOW 28CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
An issue was discovered in the ammonia crate before 3.1.0 for Rust. XSS can occur because the parsing differences for HTML, SVG, and MathML are mishandled, a similar issue to CVE-2020-26870.
Why it matters now
EPSS 0.00705 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed ammonia (crates.io): 3.1.0, 2.1.3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | ammonia (crates.io) | 3.0.0 to before 3.1.0 | 3.1.0 | Patch available | GHSA-5325-xw5m-phm3 |
| — | ammonia (crates.io) | before 2.1.3 | 2.1.3 | Patch available | GHSA-5325-xw5m-phm3 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- ammonia (crates.io) Vendor— Affected 3.0.0 to before 3.1.0 Fixed in 3.1.0 Patch available GHSA-5325-xw5m-phm3
- ammonia (crates.io) Vendor— Affected before 2.1.3 Fixed in 2.1.3 Patch available GHSA-5325-xw5m-phm3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ammonia_project:ammonia:*:*:*:*:*:rust:*:* | before 3.1.0 | Vulnerable | Ammonia Project |
- cpe:2.3:a:ammonia_project:ammonia:*:*:*:*:*:rust:*:* Versions before 3.1.0 Vulnerable ·Ammonia Project
Remediation
- Fix · GHSA-5325-xw5m-phm3 ammonia (crates.io) Fixed in 3.1.0 Advisory →
- Fix · GHSA-5325-xw5m-phm3 ammonia (crates.io) Fixed in 2.1.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-38193
- 2026-10-03 Alias added: GHSA-5325-xw5m-phm3
References
Advisory 2
More Ammonia Project Ammonia vulnerabilities
- TI-2019-11642 An issue was discovered in the ammonia crate before 2.1.0 for Rust. CVSS 3.0HIGH 7.5
Sources
- CVE-2021-38193 · CVE Program
- CVE-2021-38193 · NVD
- FIRST EPSS
- GHSA-5325-xw5m-phm3 · GitHub Advisory Database · CC BY 4.0
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