CVE Explorer
CVE-2026-55956
Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Apache Tomcat","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"11.0.22","status":"affected","version":"11.0.0-M1","versionType":"semver"},{"lessThanOrEqual":"10.1.55","status":"affected","version":"10.1.0-M1","versionType":"semver"},{"lessThanOrEqual":"9.0.118","status":"affected","version":"9.0.0.M1","versionType":"semver"},{"lessThanOrEqual":"8.5.100","status":"affected","version":"8.5.0","versionType":"semver"},{"lessThanOrEqual":"7.0.109","status":"affected","version":"7.0.0","versionType":"semver"},{"lessThan":"7.0.0","status"…
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:9f65ed090630b9d37478bd3740f6887bd2a219b3850a8dbfafb48db23955fbbb · sha256:d3ae17536c6bd5cf… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:9f65ed090630b9d37478bd3740f6887bd2a219b3850a8dbfafb48db23955fbbb · sha256:d3ae17536c6bd5cf… · /containers/adp/1/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-285","description":"CWE-285 Improper Authorization","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:9f65ed090630b9d37478bd3740f6887bd2a219b3850a8dbfafb48db23955fbbb · sha256:d3ae17536c6bd5cf… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"url":"http://www.openwall.com/lists/oss-security/2026/06/29/25"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9f65ed090630b9d37478bd3740f6887bd2a219b3850a8dbfafb48db23955fbbb · sha256:d3ae17536c6bd5cf… · /containers/adp/0/references/0
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/dcjdcnnnww9hhdm016hr0l7hpw1bzjfp"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:9f65ed090630b9d37478bd3740f6887bd2a219b3850a8dbfafb48db23955fbbb · sha256:d3ae17536c6bd5cf… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.