{"cve":"CVE-2023-34981","nvd":{"published":"2023-06-21T11:15:09.410","modified":"2026-06-17T06:04:12.667","status":"Modified","description":"A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-732"],"references":["https://lists.apache.org/thread/j1ksjh9m9gx1q60rtk1sbzmxhvj5h5qz","https://security.netapp.com/advisory/ntap-20230714-0003/","https://lists.apache.org/thread/j1ksjh9m9gx1q60rtk1sbzmxhvj5h5qz","https://security.netapp.com/advisory/ntap-20230714-0003/"],"products":["apache:tomcat"],"source":"nvd","synced_at":"2026-10-19T21:38:30.124994567+00:00"},"epss":{"cve":"CVE-2023-34981","score":0.01116,"percentile":0.66097,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-mppv-79ch-vw6q","url":"https://osv.dev/vulnerability/GHSA-mppv-79ch-vw6q","summary":"Apache Tomcat vulnerable to information leak","modified":"2024-04-24T19:44:03Z","packages":[{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=11.0.0-M5 <11.0.0-M6"],"fixed":["11.0.0-M6"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=10.1.8 <10.1.9"],"fixed":["10.1.9"]},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","ranges":[">=9.0.74 <9.0.75"],"fixed":["9.0.75"]},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote","purl":"pkg:maven/org.apache.tomcat/tomcat-coyote","ranges":[">=8.5.88 <8.5.89"],"fixed":["8.5.89"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}