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ALSA-2026:93469 (CVE-2026-65182)
Vulnerability from osv_almalinux – Published: 2026-11-02 00:00 – Updated: 2026-11-02 11:10 – Source website
VLAI
Summary
Important: tomcat security update
Details
Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies.
Security Fix(es):
- tomcat: Apache Tomcat: Security constraint bypass due to improper access control (CVE-2026-65182)
- tomcat: Apache Tomcat: Access control bypass due to off-by-one error in RewriteValve [N] flag processing (CVE-2026-65927)
- tomcat: Apache Tomcat: Improper Input Validation allows HTTP/2 no-authority bypass of strict SNI validation (CVE-2026-65637)
- tomcat: Apache Tomcat: Improper Authentication due to principal lookup failure (CVE-2026-68569)
- tomcat: Apache Tomcat: Authentication bypass via limited replay attack in DIGEST authenticator (CVE-2026-65905)
- tomcat: Apache Tomcat: Unauthorized resource access via FORM authentication bypass (CVE-2026-68525)
- tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak (CVE-2026-68763)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
References
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CVE-2026-65182 (GCVE-0-2026-65182)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:43 – Updated: 2026-08-26 15:18
VLAI
EPSS
VEX
Title
Apache Tomcat: Bypass longest prefix security constraint
Summary
Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path.
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, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.
Users are recommended to upgrade to version 11.0.25, 10.1.58, 9.0.121, which fixes the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:17 UTC
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.24
(semver)
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CVE-2026-65637 (GCVE-0-2026-65637)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:49 – Updated: 2026-08-26 15:20
VLAI
EPSS
VEX
Title
Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete
Summary
Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.
This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:20 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
1 reference
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1 product
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Affected:
11.0.20 , ≤ 11.0.24
(semver)
Affected: 10.1.53 , ≤ 10.1.57 (semver) Affected: 9.0.115 , ≤ 9.0.120 (semver) |
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CVE-2026-65905 (GCVE-0-2026-65905)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:51 – Updated: 2026-08-26 15:21
VLAI
EPSS
VEX
Title
Apache Tomcat: Limited replay attack possible with DIGEST authentication
Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:20 UTC
CWE
- CWE-294 - Authentication Bypass by Capture-replay
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.24
(semver)
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CVE-2026-65927 (GCVE-0-2026-65927)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:53 – Updated: 2026-08-26 15:22
VLAI
EPSS
VEX
Title
Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control
Summary
Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.
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Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:21 UTC
CWE
- CWE-193 - Off-by-one Error
Assigner
References
2 references
Impacted products
1 product
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CVE-2026-68525 (GCVE-0-2026-68525)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:57 – Updated: 2026-08-26 18:40
VLAI
EPSS
VEX
Title
Apache Tomcat: Redirect after FORM auth may bypass method specific constraints
Summary
Incorrect Authorization vulnerability in Apache Tomcat's FORM authentication process allows the bypassing of a security constraint that limits user has access to a resource POST but not GET.
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
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Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fixes the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:40 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
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Affected:
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CVE-2026-68569 (GCVE-0-2026-68569)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:59 – Updated: 2026-09-21 11:06
VLAI
EPSS
VEX
Title
Apache Tomcat: Principal lookup can fail open in some cases
Summary
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm.
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.
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Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:38 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
Impacted products
1 product
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CVE-2026-68763 (GCVE-0-2026-68763)
Vulnerability from cvelistv5 – Published: 2026-08-25 22:00 – Updated: 2026-08-26 18:36
VLAI
EPSS
VEX
Title
Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset
Summary
Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.59 through 8.5.100. 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.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:36 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.24
(semver)
Affected: 10.1.0-M1 , ≤ 10.1.57 (semver) Affected: 9.0.39 , ≤ 9.0.120 (semver) Affected: 8.5.59 , ≤ 8.5.100 (semver) Unaffected: 0 , ≤ 7.0.109 (semver) |
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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