CVE-2026-53530

RaTeX is a KaTeX-compatible math rendering engine written in Rust. Prior to version 0.1.11, the public parser entrypoint `ratex_parser::parse(&str)` panics on the 9-byte input `\verbéxé` (i.e. `\verb` followed by the non-ASCII delimiter `é`). When handling a `\verb` command, the parser slices the verbatim argument with byte indices (`arg[1..arg.len() - 1]`); if the delimiter character is multibyte UTF-8, index `1` lands inside that character and Rust panics with *“byte index 1 is not a char boundary”*. Because RaTeX’s release profile sets `panic = "abort"` (`Cargo.toml:48`), the panic aborts the entire process — not just the current request/thread — making this a hard denial of service for any service that renders untrusted LaTeX. Version 0.1.11 fixes the issue.

CVSS

No CVSS.

References

Link	Resource
https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj
https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-21 22:16

Updated : 2026-09-09 21:06

NVD link : CVE-2026-53530

Mitre link : CVE-2026-53530

CVE.ORG link : CVE-2026-53530

JSON object : View

Products Affected

No product.

CWE

CWE-248

Uncaught Exception

CWE-400

Uncontrolled Resource Consumption

CWE-1285

Improper Validation of Specified Index, Position, or Offset in Input

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