Vulnerability record · CVE-2026-24880 · published 9 April 2026

CVE-2026-24880: Apache tomcat http request smuggling vulnerability

Apache · Tomcat

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.

7.5 CVSS 3.1 High EPSS 0.68% · top 49.4% CWE-444 · HTTP request smuggling

7.5CVSS 3.1 base score

0.68%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References

17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Tomcat Apache

References

Link	Tags
https://lists.apache.org/thread/2c682qnlg2tv4o5knlggqbl9yc2gb5sn	Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/09/20	Mailing ListThird Party Advisory

Track CVE-2026-24880 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-24813Apache Tomcat Default Servlet path equivalence enables RCE and file disclosureApache Tomcat mishandles path equivalence for names containing an internal dot, letting a remote unauthenticated attacker write files through the Def…KEVEPSS 100%analysed10 Mar 2025 9.8CVE-2020-1938Apache Tomcat AJP connector file read and JSP execution flawApache Tomcat shipped an AJP Connector enabled by default that listened on all configured IP addresses, and Tomcat treats AJP connections as more tru…KEVEPSS 99%analysed24 Feb 2020 9.8CVE-2016-8735Apache Tomcat JmxRemoteLifecycleListener remote code executionApache Tomcat's JmxRemoteLifecycleListener was not updated to match the Oracle CVE-2016-3427 credential-type fix, leaving a deserialization weakness …KEVEPSS 90%analysed6 Apr 2017 8.1CVE-2017-12617Apache Tomcat Default Servlet JSP upload leads to remote code executionApache Tomcat with HTTP PUT enabled (for example, the Default servlet readonly parameter set to false) allows an attacker to upload a JSP file throug…KEVEPSS 100%analysed4 Oct 2017 8.1CVE-2017-12615Apache Tomcat on Windows unrestricted JSP upload via HTTP PUTApache Tomcat 7.0.0 through 7.0.79 on Windows with HTTP PUT enabled (for example, Default servlet readonly set to false) allows an attacker to upload…KEVEPSS 100%analysed19 Sep 2017 7.5CVE-2026-34486Apache Tomcat EncryptInterceptor bypass exposes sensitive dataApache Tomcat contains a missing encryption of sensitive data flaw: the fix for CVE-2026-29146 can be bypassed, allowing the EncryptInterceptor to be…KEVEPSS 6.6%analysed9 Apr 2026 7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed10 Oct 2023 9.8CVE-2026-65637Apache tomcat improper input validation vulnerabilityImproper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat: from 11.0.20 thr…EPSS 0.74%25 Aug 2026

Source: NIST National Vulnerability Database (record CVE-2026-24880), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.