What is GHSA-w9r8-5j45-v8mg?

GHSA-w9r8-5j45-v8mg is a security advisory published by GitHub Security Advisories with Critical severity. Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing...

Which CVE IDs does GHSA-w9r8-5j45-v8mg cover?

GHSA-w9r8-5j45-v8mg covers the following CVE IDs: CVE-2026-101356. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-w9r8-5j45-v8mg?

GHSA-w9r8-5j45-v8mg has a CVSS v3 base score of 9.1, published by GitHub Security Advisories.

GHSA-w9r8-5j45-v8mgCriticalCVSS 9.1

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing...

Vendor

GitHub Security Advisories

Published

October 20, 2026

Last Modified

October 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-101356 →

📋 Description

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users.

This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122.

Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-101356
https://lists.apache.org/thread.html/d1xjt7bbjqw7y7n5mcb4fm815hpfgc27
http://www.openwall.com/lists/oss-security/2026/10/20/27
https://github.com/advisories/GHSA-w9r8-5j45-v8mg