CVE-2026-24734 (GCVE-0-2026-24734)

Vulnerability from cvelistv5 – Published: 2026-02-17 18:53 – Updated: 2026-06-30 03:20
VLAI?
Title
Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass
Summary
Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed. This issue affects Apache Tomcat Native:  from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat: from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114. The following versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected. Apache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue. Apache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.
Severity ?
No CVSS data available.
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Native Affected: 1.1.23 , ≤ 1.1.34 (semver)
Affected: 1.2.0 , ≤ 1.2.39 (semver)
Affected: 1.3.0 , ≤ 1.3.4 (semver)
Affected: 2.0.0 , ≤ 2.0.11 (semver)
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    Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.17 (semver)
Affected: 10.1.0-M7 , ≤ 10.1.51 (semver)
Affected: 9.0.83 , ≤ 9.0.114 (semver)
Unaffected: 0 , ≤ 8.5.100 (semver)
Create a notification for this product.
Credits
Joshua Rogers (@MegaManSec)
Show details on NVD website
To clipboard 

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Apache Tomcat: from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114.\\n\\n\\nThe following versions were EOL at the time the CVE was created but are \\nknown to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39.\\u00a0Older EOL versions are not affected.\\n\\nApache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue.\\n\\nApache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eImproper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat.\u003c/p\u003e\u003cp\u003eWhen using an OCSP responder, Tomcat Native (and Tomcat\u0027s FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed.\u003c/p\u003e\u003cp\u003eThis issue affects Apache Tomcat Native:\u0026nbsp; from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat: from 11.0.0-M1 through 11.0.17, from 10.1.0-M7 through 10.1.51, from 9.0.83 through 9.0.114.\u003cbr\u003e\u003c/p\u003e\u003cp\u003eThe following versions were EOL at the time the CVE was created but are \\nknown to be affected: \u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003efrom 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39.\u0026nbsp;Older EOL versions are not affected.\u003c/span\u003e\u003c/p\u003e\u003cp\u003eApache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue.\u003c/p\u003eApache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-20\", \"description\": \"CWE-20 Improper Input Validation\"}]}], \"providerMetadata\": {\"orgId\": \"f0158376-9dc2-43b6-827c-5f631a4d8d09\", \"shortName\": \"apache\", \"dateUpdated\": \"2026-02-17T18:53:12.228Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-24734\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-30T02:46:04.939Z\", \"dateReserved\": \"2026-01-26T14:20:56.965Z\", \"assignerOrgId\": \"f0158376-9dc2-43b6-827c-5f631a4d8d09\", \"datePublished\": \"2026-02-17T18:53:12.228Z\", \"assignerShortName\": \"apache\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.