CVE-2026-86350

LOWCVSS 9.1 · CRITICAL

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up. This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.

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0.0/ 10 priority

Sources & remediation

Other references

https://lists.apache.org/thread/mss45z99lcdd5dtpgcn45dy82f3toswc

Weakness type (CWE)

CWE-444

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

2 mentions across 1 observed day

What's happening

2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d

Referenced assets2 URLs

By indicator

Full discourse2 posts

Kazuki Omo@omokazuki1d
Tomcatの脆弱性(Critical: CVE-2026-76183, CVE-2026-86248, CVE-2026-86350, High: CVE-2026-75973, CVE-2026-77762, CVE-2026-77791, CVE-2026-78383, CVE-2026-78437, CVE-2026-79677, CVE-2026-87022, Medium: CVE-2026-73581, Low: CVE-2026-77756) https://security.sios.jp/vulnerability/tomcat-security-vulnerability-20260924/
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CVE@CVEnew1d
CVE-2026-86350 Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can… https://www.cve.org/CVERecord?id=CVE-2026-86350
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