Apache Tomcatに脆弱性（CVE-2026-65905）
概要
Apache Tomcatに脆弱性が確認されました。
バージョン 11.0.0-M1 以上 11.0.25 未満、10.1.0-M1 以上 10.1.58 未満、9.0.0.M1 以上 9.0.121 未満、8.5.0 以上 8.5.100 以下、7.0.30 以上 7.0.109 以下に影響があります。
修正版 11.0.25 / 10.1.58 / 9.0.121 への更新が推奨されます。
脆弱性の基本情報
| 脆弱性ID |
CVE-2026-65905 GHSA-9xv2-5v5q-p794 BIT-tomcat-2026-65905 |
|---|---|
| 脆弱性の種類 | CWE-294 |
| 危険度 | 重大 |
| CVSSスコア |
9.8（CVSS v3.x） CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 公開日 | 2026年8月26日 |
| 更新日 | 2026年9月11日 |
影響を受ける製品
| 製品 | 影響を受けるバージョン | 修正版 | 出典 |
|---|---|---|---|
| Apache Tomcat |
11.0.0-M1 以上 11.0.25 未満、10.1.0-M1 以上 10.1.58 未満、9.0.0.M1 以上 9.0.121 未満、8.5.0 以上 8.5.100 以下、7.0.30 以上 7.0.109 以下 | 11.0.25 / 10.1.58 / 9.0.121 | OSV.dev |
推奨対応
- Apache Tomcatを、ご利用中の系列に対応する修正版（11.0.25 / 10.1.58 / 9.0.121）またはそれ以降の公式最新版へ更新してください。
情報元の原文
OSV.dev
Apache Tomcat's DIGEST authenticator has an Authentication Bypass by Capture-replay vulnerability
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.
利用条件：CC BY 4.0
出典: GitHub Advisory Database（OSV.dev 経由で取得）。原文のまま掲載（改変なし）
NVD（National Vulnerability Database / NIST）
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.
利用条件：米国政府の著作物（パブリックドメイン）・原文のまま掲載
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
情報元
- OSV.dev
https://github.com/advisories/GHSA-9xv2-5v5q-p794 - NVD（National Vulnerability Database / NIST）
https://nvd.nist.gov/vuln/detail/CVE-2026-65905