CVE-2026-81700 - openssl_encrypt before 1.4.9 GPG Signature Verification Bypass
Posted: Thu Aug 27, 2026 8:39 pm
CVE ID :CVE-2026-81700
Published : Aug. 27, 2026, 5:21 p.m. | 1 hour, 57 minutes ago
Description :openssl_encrypt versions before 1.4.9 contain a signature verification vulnerability in gpg_runner.verify_detached that accepts revoked and expired keys by only checking VALIDSIG status without inspecting REVKEYSIG, EXPKEYSIG, or gpg exit codes. Attackers holding compromised-then-revoked signing keys or expired project keys can bypass signature verification to execute malicious plugins in the host process.
Severity: 9.8 | CRITICAL
More Information:
https://cvefeed.io/vuln/detail/CVE-2026-81700
Published : Aug. 27, 2026, 5:21 p.m. | 1 hour, 57 minutes ago
Description :openssl_encrypt versions before 1.4.9 contain a signature verification vulnerability in gpg_runner.verify_detached that accepts revoked and expired keys by only checking VALIDSIG status without inspecting REVKEYSIG, EXPKEYSIG, or gpg exit codes. Attackers holding compromised-then-revoked signing keys or expired project keys can bypass signature verification to execute malicious plugins in the host process.
Severity: 9.8 | CRITICAL
More Information:
https://cvefeed.io/vuln/detail/CVE-2026-81700