CVE-2026-81680

openssl_encrypt before 1.4.9 Authentication Bypass via Recovery Slot Removal

State: Published
Severity: 9.3 Critical
Published: Aug 27, 2026
Updated: Oct 1, 2026
Reserved: Aug 27, 2026

Description

openssl_encrypt versions before 1.4.9 fail to authenticate recovery-slot presence in envelope-format encrypted files, allowing attackers to remove recovery slots without re-encrypting the payload. Attackers can modify the file header to delete recovery-slot fields and bypass authentication, silently removing recovery paths the owner deliberately added.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	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	VulnCheck
3.1	4.0 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N	VulnCheck

Weaknesses

CWE-347 Improper Verification of Cryptographic Signature

Affected Products

Product	Versions
openssl_encryptjahlives	before 1.4.9Affected 1.4.9Not affected

References

GitHub Security Advisory (GHSA-grhj-cpmg-f5mx)vendor-advisory
VulnCheck Advisory: openssl_encrypt before 1.4.9 Authentication Bypass via Recovery Slot Removalthird-party-advisory

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