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Critical 3 vendors · 3 advisories

CVE-2026-53434: BASM (Broken Authentication & Session Management) Apache Tomcat Dependency in Jira Software Data Center and Server

CVE-2026-53434 key facts

CISA KEV
Not listed (catalogue checked )
Highest advisory rating
Critical
CVSS base score
9.1 (Atlassian), 9.1 (NetApp), 3.7 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N (Red Hat)
Weakness
CWE-390
Fixed releases
  • Atlassian: Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only, Jira Data Center and Server: 10.3.25 (LTS) Data Center Only, Jira Service Management Data Center and Server: 11.3.11 (LTS) recommended Data Center Only, Jira Service Management Data Center and Server: 10.3.25 (LTS) Data Center Only
  • Red Hat: 11.0.23, 10.1.56, 9.0.119, tomcat9-1:9.0.120-1.el10_2, tomcat9-1:9.0.120-1.el10_0, tomcat-1:9.0.120-1.el8_10 and 28 more in the advisory
Vendor advisories
3 from Atlassian, NetApp, Red Hat
Listed by VulniPulse
Record changed

Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-53434; each belongs to its advisory, not to every product listed. How records are collected and checked.

How do I fix CVE-2026-53434?

Upgrade to a fixed release named by the vendor:

  • Atlassian: Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only, Jira Data Center and Server: 10.3.25 (LTS) Data Center Only, Jira Service Management Data Center and Server: 11.3.11 (LTS) recommended Data Center Only, Jira Service Management Data Center and Server: 10.3.25 (LTS) Data Center Only
  • Red Hat: 11.0.23, 10.1.56, 9.0.119, tomcat9-1:9.0.120-1.el10_2, tomcat9-1:9.0.120-1.el10_0, tomcat-1:9.0.120-1.el8_10
  • Upgrade to a fixed version listed by Atlassian: Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only; Jira Data Center and Server: 10.3.25 (LTS) Data Center Only; Jira Service Management Data Center and Server: 11.3.11 (LTS) recommended Data Center Only; Jira Service Management Data Center and Server: 10.3.25 (LTS) Data Center Only. (Atlassian)
  • This vulnerability only affects Tomcat deployments using the FFM-based connector (requires Java 22+) with CRL-based certificate revocation checking. Deployments using the standard NIO/NIO2 connectors or not using CRL checking are not affected. (Red Hat)

Vendor advisories for CVE-2026-53434

Atlassian

1 advisory
  • Advisory severityCritical9.1

    Critical [CVE-2026-53434] BASM (Broken Authentication & Session Management) Apache Tomcat Dependency in Jira Software Data Center and Server

    CVE-2026-53434Source published

    BASM (Broken Authentication & Session Management) Apache Tomcat Dependency in Jira Software Data Center and Server. Listed in Atlassian's Security Bulletin of September 15 2026. Affected products named by the advisory: Jira Data Center and Server; Jira Service Management Data Center and Server.

    Affected products in this advisory
    • Jira Data Center and Server
    • Jira Service Management Data Center and Server
    Source-reported affected versions
    • Jira Data Center and Server: 11.3.0 to 11.3.10 (LTS)
    • Jira Data Center and Server: 11.2.0 to 11.2.1
    • Jira Data Center and Server: 11.1.0 to 11.1.1
    • Jira Data Center and Server: 11.0.0 to 11.0.1

    12 more entries in the full advisory.

    Source-reported fixed versions
    • Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only
    • Jira Data Center and Server: 10.3.25 (LTS) Data Center Only
    • Jira Service Management Data Center and Server: 11.3.11 (LTS) recommended Data Center Only
    • Jira Service Management Data Center and Server: 10.3.25 (LTS) Data Center Only
    Mitigation guidance
    • Upgrade to a fixed version listed by Atlassian: Jira Data Center and Server: 11.3.11 (LTS) recommended Data Center Only; Jira Data Center and Server: 10.3.25 (LTS) Data Center Only; Jira Service Management Data Center and Server: 11.3.11 (LTS) recommended Data Center Only; Jira Service Management Data Center and Server: 10.3.25 (LTS) Data Center Only.
    Full advisory and evidenceOpen source bulletin

NetApp

1 advisory
  • Advisory severityCritical9.1

    Critical [CVE-2026-53434] Apache Tomcat Vulnerability in NetApp Products

    NTAP-20260703-0013Source published Source updated

    Apache Tomcat versions 11.0.0-M1 through 11.0.22, 10.1.0-M7 through 10.1.55, and 9.0.83 through 9.0.118 are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information or addition or modification of data. NetApp reports that one or more additional products remain under investigation; review the canonical advisory for current status. NetApp states there is no workaround available at this time.

    Affected products in this advisory
    No product details extracted. Check the source bulletin.
    Source-reported affected versions
    • 11.0.0
    • 11.0.22
    • 10.1.0
    • 10.1.55

    2 more entries in the full advisory.

    Source-reported fixed versions
    No fixed-version detail extracted. This does not mean no fix exists.
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

Red Hat

1 advisory
  • Advisory severityLow3.7

    Low [CVE-2026-53434] Error condition not handled when configuring CRLs

    CVE-2026-53434Source published Source updated

    Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue. When configuring Certificate Revocation Lists (CRLs) for a FFM (presumably a specific type of connector), the system fails to detect and act upon an error condition. This oversight could lead to unexpected behavior or a security bypass, as the intended security controls might not be properly enforced. A flaw in Apache Tomcat's FFM-based connector causes errors loading configured Certificate Revocation Lists (CRLs) to be ignored, which could allow…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10.0 Extended Update Support
    • Red Hat Enterprise Linux 8.8 Telecommunications Update Service
    • Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
    • Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

    17 more entries in the full advisory.

    Source-reported affected versions
    • 11.0.0
    • 11.0.22
    • 10.1.0
    • 10.1.55

    2 more entries in the full advisory.

    Source-reported fixed versions
    • 11.0.23
    • 10.1.56
    • 9.0.119
    • tomcat9-1:9.0.120-1.el10_2

    30 more entries in the full advisory.

    Mitigation guidance
    • This vulnerability only affects Tomcat deployments using the FFM-based connector (requires Java 22+) with CRL-based certificate revocation checking. Deployments using the standard NIO/NIO2 connectors or not using CRL checking are not affected.
    Full advisory and evidenceOpen source bulletin

References

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