rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVP_DigestFinal() always writes EVP_MD_CTX_size(ctx) to the out buffer. If out is smaller than that, MdCtxRef::digest_final() writes past its end, usually corrupting the stack. This is reachable from safe Rust. This vulnerability is fixed in 0.10.78.
History

Tue, 28 Apr 2026 17:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:rust-openssl_project:rust-openssl:*:*:*:*:*:rust:*:*
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Tue, 28 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Rust-openssl Project
Rust-openssl Project rust-openssl
Vendors & Products Rust-openssl Project
Rust-openssl Project rust-openssl

Fri, 24 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 24 Apr 2026 17:30:00 +0000

Type Values Removed Values Added
Description rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVP_DigestFinal() always writes EVP_MD_CTX_size(ctx) to the out buffer. If out is smaller than that, MdCtxRef::digest_final() writes past its end, usually corrupting the stack. This is reachable from safe Rust. This vulnerability is fixed in 0.10.78.
Title rust-openssl: MdCtxRef::digest_final() writes past caller buffer with no length check
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 8.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-24T17:19:15.187Z

Updated: 2026-04-24T17:42:54.765Z

Reserved: 2026-04-22T03:53:24.406Z

Link: CVE-2026-41681

cve-icon Vulnrichment

Updated: 2026-04-24T17:42:51.659Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-24T18:16:29.717

Modified: 2026-04-28T17:44:16.670

Link: CVE-2026-41681

cve-icon Redhat

No data.