CVE-2026-81688
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| jahlives | openssl_encrypt | 0 < 1.4.9 | affected |
| jahlives | openssl_encrypt | 1.4.9 | unaffected |
Weaknesses
- CWE-311: Missing Encryption of Sensitive Data
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
References
- https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-7c3q-gp4v-q29q
- https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-plaintext-confirmation-oracle-via-sha-256
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