CVE-2026-86350

CVE Enrichment

CVSS: 9.1 CRITICAL
EPSS: 0.31%
EPSS Percentile: 22.30%
CISA KEV: Not listed

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: security@apache.org
Published: 23-Sep-2026 19:17
Last Modified: 24-Sep-2026 00:58
EPSS Date: 2026-10-11
CWE: CWE-444

CVSS Vector


            CVSS:3.1                            AV:N /
                            AC:L /
                            PR:N /
                            UI:N /
                            S:U /
                            C:H /
                            I:H /
                            A:N

References

security@apache.org

Last enrichment sync: 12-Oct-2026 03:57
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

and Location Engine), CVE-2026-89078, CVE-2026-93577 (GitLab), CVE-2026-96512 (Sudo), CVE-2026-87022, CVE-2026-86350, CVE-2026-78437, CVE-2026-78383, CVE-2026-77791, CVE-2026-79677, CVE-2026-76183, CVE-2026-75973, Weekly Security Recap: Exploited Citrix NetScaler Flaw and Dozens of Vulnerabilities

CVE (135)

Vendors (1)

Products (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.