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CVE-2026-55955

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9ca8bfb8965b00a7d79e6ff2e961b2a569e68f292f3aaff1b5ff5b0d7a82f7b6
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":"9.0.13","versionType":"semver"},{"lessThanOrEqual":"8.5.100","status":"affected","version":"8.5.38","versionType":"semver"},{"lessThanOrEqual":"7.0.109","status":"affected","version":"7.0.100","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d4e87b68a9dfa8e8086d5f40fb118e901ba03eaf1253bd9ef60ab3a1a2d150c1 · sha256:ea7dc6edd096f852… · /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_v5cvss
    urn:baitaphish:normalized-source-record:v2:d4e87b68a9dfa8e8086d5f40fb118e901ba03eaf1253bd9ef60ab3a1a2d150c1 · sha256:ea7dc6edd096f852… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-287","description":"CWE-287 Improper Authentication","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d4e87b68a9dfa8e8086d5f40fb118e901ba03eaf1253bd9ef60ab3a1a2d150c1 · sha256:ea7dc6edd096f852… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/29/24"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d4e87b68a9dfa8e8086d5f40fb118e901ba03eaf1253bd9ef60ab3a1a2d150c1 · sha256:ea7dc6edd096f852… · /containers/adp/0/references/0
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/g4p5sf45p3f9r011pwqs9r54yd64s106"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d4e87b68a9dfa8e8086d5f40fb118e901ba03eaf1253bd9ef60ab3a1a2d150c1 · sha256:ea7dc6edd096f852… · /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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