CVE-2026-123610GHSA-h2v8-394m-p7vvRUSTSEC-2026-0348
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.
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| Product | Affected versions | Fixed in | Source |
|---|---|---|---|
| rustlscrates.io | >= 0.23.9, < 0.23.46 | 0.23.46 | OSV |
0.2%5th percentile
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Published
First publication at the source
Collected
First seen by Baba Yaga Security
Last modified
Latest change at the source
Debug impls for client session values expose TLS secrets