CVE-2026-41678

rust-openssl provides OpenSSL bindings for the Rust programming language. From to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 <= in_.len(), but this condition is reversed. The intended invariant is out.len() >= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:rust-openssl_project:rust-openssl:*:*:*:*:*:rust:*:*

History

28 Apr 2026, 17:41

Type	Values Removed	Values Added
References	~~() https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9 -~~	() https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9 - Vendor Advisory
CPE		cpe:2.3:a:rust-openssl_project:rust-openssl::::::rust::*
First Time		Rust-openssl Project Rust-openssl Project rust-openssl
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8

24 Apr 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-24 18:16

Updated : 2026-04-28 17:41

NVD link : CVE-2026-41678

Mitre link : CVE-2026-41678

CVE.ORG link : CVE-2026-41678

JSON object : View

Products Affected

rust-openssl_project

rust-openssl

CWE

CWE-787

Out-of-bounds Write

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