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Highest advisory severityCritical 3 vendors · 3 advisories

CVE-2026-65905

Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator

CVE-2026-65905: Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. Not in the CISA KEV catalog.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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CVE-2026-65905 key facts

CISA KEV
Not listed (catalog checked )
Highest advisory severity
Critical
CVSS base score
9.8 (Apache), 9.8 (NetApp), 4.8 (Red Hat)
CVSS vector
  • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N (Red Hat)
Weakness
CWE-294
Fixed releases
  • Apache: 11.0.25, 10.1.58, 9.0.121
  • Red Hat: 11.0.25, 10.1.58, 9.0.121, tomcat, jws6-tomcat-0:10.1.49-16.redhat_00016.1.el10jws, jws6-tomcat-0:10.1.49-16.redhat_00016.1.el8jws and 7 more in the advisory
Vendor advisories
3 from Apache, NetApp, Red Hat
VulniPulse record
Published · Updated

Scores, vectors, weaknesses and fixed releases are quoted from vendor advisories that cover only CVE-2026-65905; bulletin-wide values are not repeated here.

Is CVE-2026-65905 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-65905 is not in the CISA KEV catalog (checked ) and no tracked advisory for it reports exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-65905?

Upgrade to a fixed release named by the vendor:

  • Apache: 11.0.25, 10.1.58, 9.0.121
  • Red Hat: 11.0.25, 10.1.58, 9.0.121, tomcat, jws6-tomcat-0:10.1.49-16.redhat_00016.1.el10jws, jws6-tomcat-0:10.1.49-16.redhat_00016.1.el8jws
  • Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue. (Apache)
  • To mitigate this issue, disable DIGEST authentication in Apache Tomcat if it is not a required authentication mechanism for your deployment. Refer to the Apache Tomcat documentation for guidance on configuring authentication methods. Disabling DIGEST authentication will affect services that depend on it. A restart of the Tomcat service is necessary for the configuration changes to be applied. (Red Hat)

Vendor advisory comparison

Apache

1 advisory
  • Advisory severityCritical9.8

    Critical [CVE-2026-65905] Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator

    CVE-2026-65905Source published Source updated

    Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window then that request is replayable once only while the associated nonceCount remains within the replay window. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.30 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.

    Affected products in this advisory
    • Apache Tomcat
    Source-reported affected versions
    • 11.0.0-M1 through 11.0.24
    • 10.1.0-M1 through 10.1.57
    • 9.0.0.M1 through 9.0.120.
    • 8.5.0 through 8.5.100

    3 more entries in the full advisory.

    Source-reported fixed versions
    • 11.0.25
    • 10.1.58
    • 9.0.121
    Mitigation guidance
    • Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
    Full advisory and evidenceOpen source bulletin

NetApp

1 advisory
  • Advisory severityCritical9.8

    Critical [CVE-2026-65905] Apache Tomcat Vulnerability in NetApp Products

    NTAP-20260902-0011Source published Source updated

    Apache Tomcat versions 11.0.0-M1 through 11.0.24, 10.1.0-M1 through 10.1.57, 9.0.0.M1 through 9.0.120, 8.5.0 through 8.5.100 (EOL), and 7.0.30 through 7.0.109 (EOL) are susceptible to a vulnerability which when successfully exploited could lead to disclosure of sensitive information, addition or modification of data, or Denial of Service (DoS). 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
    • 11.0.24
    • 10.1.0
    • 10.1.57

    6 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 severityMedium4.8

    Medium [CVE-2026-65905] Authentication bypass via limited replay attack in DIGEST authenticator

    CVE-2026-65905Source published Source updated

    Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST authenticated request with a nonceCount on the upper boundary of the replay window then that request is replayable once only while the associated nonceCount remains within the replay window. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.30 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. A remote attacker…

    Affected products in this advisory
    • Red Hat JBoss Web Server 6.2.5
    • Red Hat JBoss Web Server 6.2 on RHEL 10
    • Red Hat JBoss Web Server 6.2 on RHEL 8
    • Red Hat JBoss Web Server 6.2 on RHEL 9

    11 more entries in the full advisory.

    Source-reported affected versions
    • 11.0.0
    • 11.0.24
    • 10.1.0
    • 10.1.57

    6 more entries in the full advisory.

    Source-reported fixed versions
    • 11.0.25
    • 10.1.58
    • 9.0.121
    • tomcat

    9 more entries in the full advisory.

    Mitigation guidance
    • To mitigate this issue, disable DIGEST authentication in Apache Tomcat if it is not a required authentication mechanism for your deployment. Refer to the Apache Tomcat documentation for guidance on configuring authentication methods. Disabling DIGEST authentication will affect services that depend on it. A restart of the Tomcat service is necessary for the configuration changes to be applied.
    Full advisory and evidenceOpen source bulletin

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