CVE-2026-81721: Uncontrolled Resource Consumption in jahlives openssl_encrypt
openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore headers, allowing attackers to trigger unbounded memory allocation. Attackers can craft malicious encrypted files declaring arbitrarily large Argon2, scrypt, or balloon KDF parameters to exhaust system memory and crash the process without authentication.
CVE-2026-81721: Uncontrolled Resource Consumption in jahlives openssl_encrypt
Description
openssl_encrypt before 1.4.9 fails to validate KDF cost parameters in encrypted file metadata and keystore headers, allowing attackers to trigger unbounded memory allocation. Attackers can craft malicious encrypted files declaring arbitrarily large Argon2, scrypt, or balloon KDF parameters to exhaust system memory and crash the process without authentication.
CVSS v4.0
Score 8.7high
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-27T11:13:14.063Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a906bbbacd9273b4983a2f3
Added to database: 08/27/2026, 16:54:19 UTC
Last updated: 08/27/2026, 17:37:04 UTC
Views: 4
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