Vulnerability-Lookup

GHSA-5Q2G-877C-9CWH

Vulnerability from github – Published: 2026-10-20 15:31 – Updated: 2026-10-20 21:30

Details

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.

The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.

Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

Severity

9.1 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-101296"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-304"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-20T14:16:54Z",
    "severity": "CRITICAL"
  },
  "details": "A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism\u00a0allowed attackers to authenticate without providing the correct password.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122.\n\n\n\nThe following versions were EOL at the time the CVE was created but are known to be affected:\u00a0from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\u00a0Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.",
  "id": "GHSA-5q2g-877c-9cwh",
  "modified": "2026-10-20T21:30:54Z",
  "published": "2026-10-20T15:31:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101296"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/bl52b9go9ckoov8x4v3dt6rkm573cygd"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/10/20/26"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-101296 (GCVE-0-2026-101296)

Vulnerability from cvelistv5 – Published: 2026-10-20 13:45 – Updated: 2026-10-21 06:31

Title

Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms

Summary

A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

Severity

9.1 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-20 00:00 UTC

CWE

CWE-304 - Missing critical step in authentication

Assigner

apache CNA under the mitre root

CNA scorecard B 76/100 over 1087 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread.html/bl52b9go9cko…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/1…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Tomcat	Affected: 11.0.0-M1 , ≤ 11.0.26 (semver) Affected: 10.1.0-M1 , ≤ 10.1.60 (semver) Affected: 9.0.0.M1 , ≤ 9.0.122 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Affected: 7.0.0 , ≤ 7.0.109 (semver)

Credits

Sai Sreewathsa Kovalluri, Shon Babu, and Kannan K of Innspark Solutions Private Limited

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.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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