CVE-2026-41676
HIGH SEVERITYCVSS Score & Metrics
Base Score
9.8 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Description
rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive (and PkeyCtxRef::derive) sets len = buf.len() and passes it as the in/out length to EVP_PKEY_derive, relying on OpenSSL to honor it. On OpenSSL 1.1.x, X25519, X448, DH and HKDF-extract ignore the incoming *keylen, unconditionally writing the full shared secret (32/56/prime-size bytes). A caller passing a short slice gets a heap/stack overflow from safe code. OpenSSL 3.x providers do check, so this only impacts older OpenSSL. This vulnerability is fixed in 0.10.78.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-131
Source
GitHub
Vendor
rust
Product
openssl
External References
- https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-pqf5-4pqq-29f5
- https://github.com/rust-openssl/rust-openssl/pull/2606
- https://github.com/rust-openssl/rust-openssl/commit/09b425e5f59a2466d806e71a83a9a449c914c596
- https://github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
- https://github.com/advisories/GHSA-pqf5-4pqq-29f5
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