Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.

CVE-2026-41676 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-pqf5-4pqq-29f5	[email protected]	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-131	Incorrect Calculation of Buffer Size	[email protected]
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

Product	Versions
rust-openssl project rust-openssl	>= 0.9.27, < 0.10.78
CPE cpe:2.3:a:rust-openssl_project:rust-openssl::::::rust::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jul 15, 2026	Modified Analysis	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 28, 2026	Initial Analysis	[email protected]
Apr 24, 2026	New CVE Received	[email protected]