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CVE-2026-41677

LOW

rust-opennssl has an Out-of-bounds read in PEM password callback when returning an oversized length

Published April 22, 2026Updated May 5, 2026Source: osv

Summary

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.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update openssl to 0.10.78 or later
cargo update -p openssl --precise 0.10.78

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

PackageEcosystemAffectedFixed In
openssl
crates.io
All versions0.10.78

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 5.9 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

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

References

Frequently Asked Questions

What is CVE-2026-41677?
rust-opennssl has an Out-of-bounds read in PEM password callback when returning an oversized length This vulnerability has been assigned a severity rating of LOW (CVSS score: 5.9/10).
How do I check if my project is affected by CVE-2026-41677?
CVE-2026-41677 affects openssl. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-41677 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
5.9

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-xmgf-hq76-4vx2

Related CVEs

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  • CVE-2026-41898
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  • CVE-2026-41676
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  • CVE-2026-42327
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  • CVE-2026-54620
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