CVE-2026-34483

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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
ALSA (4)
CGA (40)
CLEANSTART (3)
CLSA (6)
DEBIAN (1)
MGASA (1)
OESA (1)
openSUSE (6)
RHSA (8)
RLSA (1)
ROOT (1)
SUSE (7)
UBUNTU (1)
Related
ALSA (4)
openSUSE (6)
SUSE (7)
Published
2026-04-09T19:30:28Z
Modified
2026-11-02T10:45:26Z
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 
{
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-116"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34483.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "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": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/apache/tomcat

Affected ranges

Type
GIT
Repo
https://github.com/apache/tomcat
Events
Introduced
11cce490eb67a8aca64377a22c0cea2e38896725
Fixed
f892e52577feef83aff57d34c2b4be61a5a68524
Introduced
e9d17cddc285615807ec5fef09240777436b25dc
Fixed
8ec9fde54ce6bda64027759389dd755b1b875edc
Introduced
56e547d387ab49f688c93fe9ca082b1b5d94deed
Fixed
1d6b501b493c11ee6fdebae911c67ca214e28c82
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "9.0.40"
                },
                {
                    "fixed": "9.0.117"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "10.1.0"
                },
                {
                    "fixed": "10.1.54"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "11.0.0"
                },
                {
                    "fixed": "11.0.21"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

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