What is RHSA-2026:3900?

RHSA-2026:3900 is a security advisory published by Red Hat Product Security with Medium severity. Red Hat Security Advisory: python3.12 security update

Which CVE IDs does RHSA-2026:3900 cover?

RHSA-2026:3900 covers the following CVE IDs: CVE-2025-13836. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:3900?

RHSA-2026:3900 has a CVSS v3 base score of 6.8, published by Red Hat Product Security.

RHSA-2026:3900MediumCVSS 6.8

Red Hat Security Advisory: python3.12 security update

Vendor

Red Hat Product Security

Published

March 5, 2026

Last Modified

June 25, 2026

🔗 CVE IDs covered (1)

CVE-2025-13836 →

📋 Description

CVE-2025-13836 — cpython: Excessive read buffering DoS in http.client

🔗 References (4)

selfhttps://access.redhat.com/errata/RHSA-2026:3900
externalhttps://access.redhat.com/security/updates/classification/#moderate
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2418078
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3900.json