CVE-2026-66422 (GCVE-0-2026-66422)

Vulnerability from cvelistv5 – Published: 2026-08-25 21:55 – Updated: 2026-08-26 02:30
VLAI
Title
Apache Tomcat: Servlet role references can bypass declarative role constraints
Summary
Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole(). This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.25 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.46 through 8.5.100, from 7.0.97 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M1 , ≤ 11.0.24 (semver)
Affected: 10.1.0-M1 , ≤ 10.1.57 (semver)
Affected: 9.0.25 , ≤ 9.0.120 (semver)
Affected: 8.5.46 , ≤ 8.5.100 (semver)
Affected: 7.0.97 , ≤ 7.0.109 (semver)
Unaffected: 0 , < 7.0.97 (semver)
guessed Create a notification for this product.
Credits
4ra1n, pyn3rd and unam4
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.