{"affected":[{"defaultStatus":"unaffected","ecosystem":"cargo","packageName":"rustls","product":"rustls","source":"CNA: VulnCheck","vendor":"rustls","versions":[{"lessThan":"0.23.46","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"0.23.46","versionType":"semver"}]}],"cveId":"CVE-2026-123610","cwes":["CWE-770"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},{"score":3.7,"severity":"low","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1794101915478,"publishedAt":1794101915478,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/rustls/rustls/security/advisories/GHSA-h2v8-394m-p7vv"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/rustls-before-0.23.46-denial-of-service-via-brotli-certificate-decompression"}],"remediation":[],"revision":"e3b77022b4c3f025463986705ef7fbb5ba72a7b1a30eb1500c917d175b9b7134","sources":[{"modifiedAt":1794101915478,"name":"CNA: VulnCheck","retrievedAt":1794103848915,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123610"}],"ssvc":null,"status":"published","title":"rustls before 0.23.46 Denial of Service via Brotli Certificate Decompression","updatedAt":1794103848915}