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CVE-2026-55957

Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Users are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:7a56e55689e19bde9727a3a311e523a0288212988b7155fe3aacfaf6a94716e0
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":"11.0.4","status":"affected","version":"11.0.0-M1","versionType":"semver"},{"lessThanOrEqual":"10.1.36","status":"affected","version":"10.1.0-M1","versionType":"semver"},{"lessThanOrEqual":"9.0.100","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_v5affected
    urn:baitaphish:normalized-source-record:v2:dd3538643fe808188b9890b2f97e4e91272ca4c7256998e29fe697ba7cf079a7 · sha256:1f97cc6f97ca7efe… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","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:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dd3538643fe808188b9890b2f97e4e91272ca4c7256998e29fe697ba7cf079a7 · sha256:1f97cc6f97ca7efe… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-304","description":"CWE-304 Missing Critical Step in Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dd3538643fe808188b9890b2f97e4e91272ca4c7256998e29fe697ba7cf079a7 · sha256:1f97cc6f97ca7efe… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/29/26"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dd3538643fe808188b9890b2f97e4e91272ca4c7256998e29fe697ba7cf079a7 · sha256:1f97cc6f97ca7efe… · /containers/adp/0/references/0
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/7fk339o5jvd4mcgsf0chbrn4o525ccjh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dd3538643fe808188b9890b2f97e4e91272ca4c7256998e29fe697ba7cf079a7 · sha256:1f97cc6f97ca7efe… · /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.

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