Vulnerability Description
openssl_encrypt versions before 1.4.9 store an unkeyed SHA-256 hash of the plaintext in the cleartext file header metadata. Attackers can read this hash without the password to confirm guessed plaintexts offline or fingerprint identical plaintexts across separately-encrypted files.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Jahlives | Openssl Encrypt | < 1.4.9 |
Related Weaknesses (CWE)
References
- https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-7c3q-gp4v-qVendor Advisory
- https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-plaintext-confThird Party Advisory
FAQ
What is CVE-2026-81688?
CVE-2026-81688 is a vulnerability with a CVSS score of 7.5 (HIGH). openssl_encrypt versions before 1.4.9 store an unkeyed SHA-256 hash of the plaintext in the cleartext file header metadata. Attackers can read this hash without the password to confirm guessed plainte...
How severe is CVE-2026-81688?
CVE-2026-81688 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-81688?
Check the references section above for vendor advisories and patch information. Affected products include: Jahlives Openssl Encrypt.