🛡️ CVE-2026-27459 on PyPI (Root.io) — pyopenssl

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2026-27459 in pyOpenSSL - Patched by Root Root has patched CVE-2026-27459 in the pyOpenSSL package for Root:PyPI. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-27459 as tracked by PyPI (Root.io), for the package pyopenssl. The fix is available in version 24.3.0+aikido.5; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software and timeline

Affected software: pyopenssl (fixed in 24.3.0+aikido.5) and rootio-pyopenssl (fixed in 22.0.0+root.io.2). Published on 16 June 2026 and last revised on 9 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

CVE-2026-27459 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-16
Updated 2026-08-12
Modified 2026-08-09
Fix URL N/A

Affected Packages

Software From version Fixed in
pyopenssl — 24.3.0+aikido.5
rootio-pyopenssl — 22.0.0+root.io.2

References

N/A

Similar Threats

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