GHSA-vr4h-5xqv-xxxf: openssl-encrypt (CVE-2026-81716)

openssl_encrypt (pip: openssl-encrypt) versions before 1.4.9 contain a path traversal flaw in PluginSandbox._is_safe_path, which authorized file access using a bare string-prefix match. A sandboxed...

CVSS 8.7 HighEPSS 0.0026 · 18th 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-vr4h-5xqv-xxxf · CVE-2026-81716 · PYSEC-2026-3800

Weakness (CWE)

CWE-22

Machine-written summary

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

openssl_encrypt versions before 1.4.9 contain a path traversal flaw in the plugin sandbox's path check, which matched allowed directories by plain string prefix. A sandboxed plugin that lacks the READ_FILES permission can read or write another plugin's directory whose name merely starts with the same prefix, breaking isolation between plugins for the same user. Upgrade to openssl_encrypt 1.4.9 or later, which fixes the check.

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 0.0026, the 18th percentile, on 12 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.