GHSA-qqfq-g2cv-j7v3: openssl-encrypt (CVE-2026-81703)

openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded PQC keys that de...

CVSS 8.7 HighEPSS 0.0022 · 13th percentile

Published by the GitHub Advisory Database at 27 Aug 2026, 17:21 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
openssl-encrypt	PyPI	<1.4.9	1.4.9

Identifiers

GHSA-qqfq-g2cv-j7v3 · CVE-2026-81703 · PYSEC-2026-3779

Weakness (CWE)

CWE-287

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

openssl-encrypt versions before 1.4.9 fail to validate whether embedded post-quantum private keys in file metadata are encrypted. An attacker who can supply a crafted file can make it decrypt under any password, bypassing authentication and producing attacker-chosen plaintext that appears to pass integrity checks. Upgrade openssl-encrypt to version 1.4.9.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	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	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0022, the 13th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:38 UTC First seen by agentprime
31 Oct 2026, 14:38 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.