rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the user's callback. A password callback that returns a value larger than the buffer it was given can cause some versions of OpenSSL to over-read this buffer. OpenSSL 3.x is not affected by this. This vulnerability is fixed in 0.10.78.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-xmgf-hq76-4vx2 rust-opennssl has an Out-of-bounds read in PEM password callback when returning an oversized length
Fixes

Solution

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Workaround

No workaround given by the vendor.

History

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

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, '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 0.9.0 to before 0.10.78, the *_from_pem_callback APIs did not validate the length returned by the user's callback. A password callback that returns a value larger than the buffer it was given can cause some versions of OpenSSL to over-read this buffer. OpenSSL 3.x is not affected by this. This vulnerability is fixed in 0.10.78.
Title rust-openssl: Out-of-bounds read in PEM password callback when user callback returns an oversized length
Weaknesses CWE-125
CWE-1284
References
Metrics cvssV4_0

{'score': 1.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-24T18:02:27.756Z

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

Link: CVE-2026-41677

cve-icon Vulnrichment

Updated: 2026-04-24T18:02:24.370Z

cve-icon NVD

Status : Received

Published: 2026-04-24T18:16:29.270

Modified: 2026-04-24T18:16:29.270

Link: CVE-2026-41677

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses