ubuntu-cve-2026-65905
Vulnerability from osv_ubuntu
Published
2026-08-25 22:17
Modified
2026-09-02 16:22
Summary
Details
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)
N/A (UNKNOWN)
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"purl": "pkg:deb/ubuntu/tomcat9@9.0.118-1~26.04.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.0.95-1ubuntu1",
"9.0.111-1",
"9.0.115-1",
"9.0.115-1ubuntu0.1",
"9.0.118-1~26.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtomcat11-embed-java",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "libtomcat11-java",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-admin",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-common",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-docs",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-examples",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
},
{
"binary_name": "tomcat11-user",
"binary_version": "11.0.22-2ubuntu2~26.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "tomcat11",
"purl": "pkg:deb/ubuntu/tomcat11@11.0.22-2ubuntu2~26.04.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"11.0.6-1",
"11.0.11-1",
"11.0.15-1",
"11.0.18-1",
"11.0.18-1ubuntu0.1~esm1",
"11.0.22-2ubuntu2~26.04.1"
]
}
],
"aliases": [],
"details": "Authentication Bypass by Capture-replay vulnerability in Apache Tomcat\u0027s 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:\u00a0from 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.",
"id": "UBUNTU-CVE-2026-65905",
"modified": "2026-09-02T16:22:32Z",
"published": "2026-08-25T22:17:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-65905"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-65905"
},
{
"type": "REPORT",
"url": "https://github.com/apache/tomcat/commit/c5f94ad1726e8399b77eb3fd69c811c1103894d6"
},
{
"type": "REPORT",
"url": "https://github.com/apache/tomcat/commit/1c1a583ba57092206f77c375f45da12c99fb141d"
},
{
"type": "REPORT",
"url": "https://github.com/apache/tomcat/commit/a31181af45e494b6035575519f6d1d33875f050d"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-65905"
]
}
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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.
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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.
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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