Vulnerability Description
rustls before 0.23.46 contains an uncontrolled memory allocation flaw in its optional Brotli certificate decompression, which limits decompressed output size but accepts an input-selected large history window. Malicious peers can send a certificate with a five-byte Brotli header requesting up to 1 GiB before authentication, aborting Brotli-enabled clients or client-authenticating servers whose allocator cannot satisfy the request.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/rustls/rustls/security/advisories/GHSA-h2v8-394m-p7vv
- https://www.vulncheck.com/advisories/rustls-before-0.23.46-denial-of-service-via
FAQ
What is CVE-2026-123610?
CVE-2026-123610 is a vulnerability with a CVSS score of 3.7 (LOW). rustls before 0.23.46 contains an uncontrolled memory allocation flaw in its optional Brotli certificate decompression, which limits decompressed output size but accepts an input-selected large histor...
How severe is CVE-2026-123610?
CVE-2026-123610 has been rated LOW with a CVSS base score of 3.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-123610?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.