CVE-2026-34483

Source
https://cve.org/CVERecord?id=CVE-2026-34483
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34483.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-34483
Aliases
Downstream
Related
Published
2026-04-09T19:30:28.874Z
Modified
2026-05-05T16:31:03.501891Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Apache Tomcat: Incomplete escaping of JSON access logs
Details

Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116.

Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117 , which fix the issue.

Database specific
{
    "cwe_ids": [
        "CWE-116"
    ],
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "11.0.0-M1"
                },
                {
                    "last_affected": "11.0.20"
                },
                {
                    "introduced": "10.1.0-M1"
                },
                {
                    "last_affected": "10.1.53"
                },
                {
                    "introduced": "9.0.40"
                },
                {
                    "last_affected": "9.0.116"
                },
                {
                    "introduced": "8.5.84"
                },
                {
                    "last_affected": "8.5.100"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "11.0.0-M1"
                },
                {
                    "fixed": "11.0.20"
                },
                {
                    "introduced": "10.1.0-M1"
                },
                {
                    "fixed": "10.1.53"
                },
                {
                    "introduced": "9.0.40"
                },
                {
                    "fixed": "9.0.116"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34483.json",
    "cna_assigner": "apache"
}
References

Affected packages

Git / github.com/apache/tomcat

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat
Events
Database specific
{
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "9.0.40"
        },
        {
            "fixed": "9.0.117"
        },
        {
            "introduced": "10.1.0"
        },
        {
            "fixed": "10.1.54"
        },
        {
            "introduced": "11.0.0"
        },
        {
            "fixed": "11.0.21"
        }
    ],
    "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*"
}

Database specific

source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34483.json"