by Kastro
Paper/Archive/CVE-2026-41677

CVE-2026-41677

rust-openssl rust-openssl — rust-openssl: Out-of-bounds read in PEM password callback when user callback returns an oversized length

EPSS 0.3%CVSS 9.1
critical.is priorityof 100
32
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 22.0.220 × 204.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
rust-openssl>= 0.9.0, < 0.10.78–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
GitHub_M (CNA)1.7CVSS: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
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgithub.com/rust-openssl/rust-openssl/security/advisories/GHSA-xmgf-hq76-4vx2