CVE Explorer
CVE-2026-42498
Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.2 through 9.0.117, from 8.5.24 through 8.5.100, from 7.0.83 through 7.0.109.
Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118, which fix the issue.
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":"11.0.21","status":"affected","version":"11.0.0-M1","versionType":"semver"},{"lessThanOrEqual":"10.1.54","status":"affected","version":"10.1.0-M1","versionType":"semver"},{"lessThanOrEqual":"9.0.117","status":"affected","version":"9.0.2","versionType":"semver"},{"lessThanOrEqual":"8.5.100","status":"affected","version":"8.5.24","versionType":"semver"},{"lessThanOrEqual":"7.0.109","status":"affected","version":"7.0.83","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:7462a11290cc1cd4af55e9ac002d47e57e845ec4e4c8f2eb1e6df2850c6f1e13 · sha256:99593424b03c819f… · /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_v5cvssurn:baitaphish:normalized-source-record:v2:7462a11290cc1cd4af55e9ac002d47e57e845ec4e4c8f2eb1e6df2850c6f1e13 · sha256:99593424b03c819f… · /containers/adp/1/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-200","description":"CWE-200 Exposure of HTTP Authentication Header to unexpected hosts","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:7462a11290cc1cd4af55e9ac002d47e57e845ec4e4c8f2eb1e6df2850c6f1e13 · sha256:99593424b03c819f… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"url":"http://www.openwall.com/lists/oss-security/2026/05/12/14"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7462a11290cc1cd4af55e9ac002d47e57e845ec4e4c8f2eb1e6df2850c6f1e13 · sha256:99593424b03c819f… · /containers/adp/0/references/0
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/n61zwf75jrv09rz90j4jssncm244bwdb"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:7462a11290cc1cd4af55e9ac002d47e57e845ec4e4c8f2eb1e6df2850c6f1e13 · sha256:99593424b03c819f… · /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.