High 7.3Published Jun 29, 2026

CVE-2026-53404Apache Tomcat: Bad ornext processing in RewriteValve

Updated under an hour ago (Oct 25, 2026, 8:00 PM ET)

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It affects Apache Software Foundation Apache Tomcat and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Apache Software Foundation Apache Tomcat

Exploited in the last 30 days

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

CVSS: 7.3 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-670
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: apache
NVD analysis: Analyzed
Record last updated: Jun 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Apache Software Foundation Apache Tomcat apache_software_foundation:apache_tomcat (from the name)	from 11.0.0-M1 through 11.0.22; from 10.1.0-M1 through 10.1.55; from 9.0.0.M1 through 9.0.118; from 8.5.0 through 8.5.100; before 8.0.0 not affected	CNA record
apache tomcat apache:tomcat	from 8.5.0 through 8.5.100; from 9.0.0 before 9.0.119; from 10.1.0 before 10.1.56; from 11.0.0 before 11.0.23	NVD

References

https://lists.apache.org/thread/rdhpghgfskrdmw9hqzjgjrtw538smpmzvendor-advisory, mailing-list
http://www.openwall.com/lists/oss-security/2026/06/29/21third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.