CVE-2026-24880

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-24880
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24880.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-24880
Aliases
Downstream
Related
Published
2026-04-09T19:12:10.730Z
Modified
2026-07-08T07:53:25.930273980Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Apache Tomcat: Request smuggling via invalid chunk extension
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24880.json",
    "cwe_ids": [
        "CWE-444"
    ],
    "cna_assigner": "apache",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "11.0.0-M1"
                },
                {
                    "last_affected": "11.0.18"
                },
                {
                    "introduced": "10.1.0-M1"
                },
                {
                    "last_affected": "10.1.52"
                },
                {
                    "introduced": "9.0.0.M1"
                },
                {
                    "last_affected": "9.0.115"
                },
                {
                    "introduced": "8.5.0"
                },
                {
                    "last_affected": "8.5.100"
                },
                {
                    "introduced": "7.0.0"
                },
                {
                    "last_affected": "7.0.109"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "11.0.0-M1"
                },
                {
                    "fixed": "11.0.18"
                },
                {
                    "introduced": "10.1.0-M1"
                },
                {
                    "fixed": "10.1.52"
                },
                {
                    "introduced": "9.0.0.M1"
                },
                {
                    "fixed": "9.0.115"
                },
                {
                    "introduced": "8.5.0"
                },
                {
                    "fixed": "8.5.100"
                },
                {
                    "introduced": "7.0.0"
                },
                {
                    "fixed": "7.0.109"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/apache/tomcat

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat
Events
Introduced
16bf392c67833ad549733b58c350ff92b5ee782a
Fixed
d2c7dce5e94d6d1d81ad7d66402140b1c1962a53
Introduced
e9d17cddc285615807ec5fef09240777436b25dc
Fixed
f3d5786aa1bd6c2a78d666afc89b2a4570f66593
Introduced
56e547d387ab49f688c93fe9ca082b1b5d94deed
Fixed
1c65de6f27a3bac481514e56e3637785b65a4f2c
Database specific 
{
    "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "9.0.0"
        },
        {
            "fixed": "9.0.116"
        },
        {
            "introduced": "10.1.0"
        },
        {
            "fixed": "10.1.53"
        },
        {
            "introduced": "11.0.0"
        },
        {
            "fixed": "11.0.20"
        }
    ],
    "source": "CPE_RANGE"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24880.json"