Skip to main content
VulnerabilityPublished

CVE-2026-24880: Apache Tomcat · HTTP Request/Response Smuggling

Affects Apache TomcatSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 7.5 High : upgrade to 8.5.101 or 7.0.110 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.5.101, 7.0.110
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade org.apache.tomcat/tomcat to 8.5.101 or 7.0.110.

Affected software

ProductAffectedFixed in
Apache Software FoundationApache TomcatAffected
  • >=11.0.0-M1 <=11.0.18
  • >=10.1.0-M1 <=10.1.52
  • >=9.0.0.M1 <=9.0.115
  • >=8.5.0 <=8.5.100
  • >=7.0.0 <=7.0.109
Fixed in–
Mavenorg.apache.tomcat/tomcatpkg:maven/org.apache.tomcat/tomcatOther threatsAffected
  • =8.5.0 <8.5.101
  • =7.0.0 <7.0.110
Fixed in
  • 8.5.101
  • 7.0.110

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade Apache Tomcat to versions 11.0.20, 10.1.52, or 9.0.116, which contain fixes for this vulnerability. No other mitigation or temporary workaround is specified. Patch status is confirmed by the vendor advisory recommending these version upgrades.

Description

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other, unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.

References

Community reviews

Loading reviews…