CVE-2026-81699

High

Description

openssl_encrypt versions before 1.4.9 fail to properly validate key derivation function costs in crafted files, allowing attackers to trigger unbounded memory and CPU exhaustion during pre-authentication processing. Attackers can supply malicious files with excessive KDF parameters to exhaust system resources and crash or wedge the process before password verification occurs.

SeverityHigh

CVSS7.5

Exploit probability—

ProductJahlives Openssl Encrypt

PublishedAug 27, 2026

First seenAug 27, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

jahlives openssl_encrypt1.4.9 or later
openssl-encrypt1.4.9 or later

Vendor advisories

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-phmr-p567-q5g6

Affected products

Product	Affected versions	Fixed in
jahlives openssl_encrypt	v < 1.4.9	1.4.9
openssl-encryptPyPI	v < 1.4.9	1.4.9

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