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GHSA-5V3H-FJV2-54FG

Vulnerability from github – Published: 2026-06-29 21:32 – Updated: 2026-06-30 00:31

Details

Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

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  "affected": [],
  "aliases": [
    "CVE-2026-55956"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-285"
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    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-29T21:16:45Z",
    "severity": null
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  "details": "Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.\n\nUsers are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.",
  "id": "GHSA-5v3h-fjv2-54fg",
  "modified": "2026-06-30T00:31:30Z",
  "published": "2026-06-29T21:32:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55956"
    },
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      "type": "WEB",
      "url": "https://lists.apache.org/thread/dcjdcnnnww9hhdm016hr0l7hpw1bzjfp"
    },
    {
      "type": "WEB",
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CVE-2026-55956 (GCVE-0-2026-55956)

Vulnerability from cvelistv5 – Published: 2026-06-29 20:46 – Updated: 2026-06-29 22:24

Title

Apache Tomcat: Security constraints for default servlet ignored method

Summary

Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

Severity

No CVSS data available.

CWE

CWE-285 - Improper Authorization

Assigner

apache

References

2 references

URL	Tags
https://lists.apache.org/thread/dcjdcnnnww9hhdm01…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Tomcat	Affected: 11.0.0-M1 , ≤ 11.0.22 (semver) Affected: 10.1.0-M1 , ≤ 10.1.55 (semver) Affected: 9.0.0.M1 , ≤ 9.0.118 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Affected: 7.0.0 , ≤ 7.0.109 (semver) Unknown: 0 , < 7.0.0 (semver)

Credits

j0hndo (dohyun4466@gmail.com)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

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.

Action not permitted

GHSA-5V3H-FJV2-54FG

CVE-2026-55956 (GCVE-0-2026-55956)

Tags

Sightings

Nomenclature