CVE-2021-38193

MEDIUM 6.1CVE-2021-38193 · Published 08/08/2021 · updated 17/06/2026

In short

CVE-2021-38193 is a MEDIUM (CVSS 6.1) vulnerability affecting ammonia (ammonia project).
Chance of exploitation in the next 30 days (EPSS): 0.70%, higher than 53.5% of all vulnerabilities.
Fix: update to 3.1.0 or later.

Package	Affected versions	Patched versions
ammonia ammonia_project	`< 3.1.0`	`3.1.0`

Description

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.

References

raw.githubusercontent.com/rustsec/advisory-db/main/crates/ammonia/RUSTSEC-2021-0074.md · Third Party Advisory
rustsec.org/advisories/RUSTSEC-2021-0074.html · Exploit

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