CVE-2026-81720CWE-400denial-of-service

CVE-2026-81720

Medium · published August 27, 2026

CVSS v3.1
6.2
EPSS
0%
Percentile
7.7
In the wild
Unconfirmed
What it is

openssl_encrypt before 1.4.9 fails to validate the memory_cost parameter from identity file protection blocks, allowing attackers to trigger out-of-memory conditions during key derivation. Attackers with write access to local identity stores can craft malicious identity files with excessive memory_cost values that cause the host to crash when unlocking identities before authentication.

The record
Technical detail
CVSS v3.1
6.2 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00185 · 7.7th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-08-27T21:21Z
Affected products (1)
ProductVersionsFixed in
jahlives/openssl_encrypt< 1.4.91.4.9
References (2)
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-783h-8q2f-f762 · [email protected]https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-denial-of-service-via-unbounded-argon2 · [email protected]
EPSS history
Timeline
  • 27 AUG 14:51Z
    openssl_encrypt before 1.4.9 Denial of Service via Unbounded Argon2
    cvelistv5