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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-101296

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

No exploitation reported by the sources we read.

  • Published2026-10-20
  • Fixed in11.0.27 · 10.1.61 · 9.0.123
  • WeaknessCWE-304

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-10-2013:45CVE publishedCNA

Versions per branch

OSV
tomcat
BranchAffectedFixed in
11.0≥ 11.0.0, < 11.0.2711.0.27
10.1≥ 10.1.0, < 10.1.6110.1.61
9.0≥ 7.0.0, < 9.0.1239.0.123

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As apache, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Apache Software Foundation Apache Tomcatother versions: not affected
    Affected
    • ≥ 11.0.0-M1, ≤ 11.0.26no fix statedsemver
    • ≥ 10.1.0-M1, ≤ 10.1.60no fix statedsemver
    • ≥ 9.0.0.M1, ≤ 9.0.122no fix statedsemver
    • ≥ 8.5.0, ≤ 8.5.100no fix statedsemver
    • ≥ 7.0.0, ≤ 7.0.109no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-21

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libapr1SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5all versions · fixed in 1.6.5-4.13.1
  • libapr1SUSE:Linux Enterprise Server 12 SP5-LTSSall versions · fixed in 1.6.5-4.13.1
  • libtcnative-1-0SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5all versions · fixed in 1.3.9-3.9.1
  • libtcnative-1-0SUSE:Linux Enterprise Server 12 SP5-LTSSall versions · fixed in 1.3.9-3.9.1
  • tomcatSUSE:Linux Enterprise Server LTSS Extended Security 12 SP5all versions · fixed in 9.0.123-3.182.2
  • tomcatSUSE:Linux Enterprise Server for SAP Applications 15 SP6all versions · fixed in 9.0.123-150200.126.1
  • tomcatSUSE:Linux Enterprise Server for SAP Applications 15 SP5all versions · fixed in 9.0.123-150200.126.1
  • tomcatSUSE:Linux Enterprise Server for SAP Applications 15 SP4all versions · fixed in 9.0.123-150200.126.1

38 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-101296 Red Hat Product Security62 products fixed · 60 known affected

    tomcat: tomcat: Authentication bypass via non-GSSAPI SASL in JNDI realm

    tomcat.src as a component of Red Hat Enterprise Linux 10 · tomcat9.src as a component of Red Hat Enterprise Linux 10 · tomcat6 as a component of Red Hat Enterprise Linux 6 · +57 more

  • RHSA-2026:85926 Red Hat Product Security31 products fixed

    Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

  • RHSA-2026:81365 Red Hat Product Security31 products fixed

    Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Full record on NVD

Fix

  1. Update tomcat to 11.0.27 · 10.1.61 · 9.0.123
  2. Vendor fix Red Hat Product Security CVE-2026-101296 · 31 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
  3. Workaround from the vendor Red Hat Product Security CVE-2026-101296 · 122 productsThe highest-value action is to reconfigure Tomcat JNDIRealm to enforce Kerberos GSSAPI authentication and eliminate non-GSSAPI SASL authentication mechanisms: upgrade to Apache Tomcat 11.0.27, 10.1.61, or 9.0.123 (or the fixed Tomcat builds), which verify credentials properly during non-GSSAPI SASL…
  4. No fix available, says the vendor Red Hat Product Security CVE-2026-101296 · 60 productsAffected

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
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
Published
2026-10-20
Last Modified
2026-11-09
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-5q2g-877c-9cwh

Frequently asked questions

What is CVE-2026-101296?

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.

Is CVE-2026-101296 actively exploited?

Active exploitation of CVE-2026-101296 has not been confirmed. Its EPSS score was 0.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-101296?

CVE-2026-101296 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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