| Summary | Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue. |
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| Publication Date | April 10, 2026, 5:16 a.m. |
| Registration Date | April 15, 2026, 11:34 a.m. |
| Last Update | April 14, 2026, 11:01 p.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 6.1 |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 攻撃元区分(AV) | ネットワーク |
| 攻撃条件の複雑さ(AC) | 低 |
| 攻撃に必要な特権レベル(PR) | 不要 |
| 利用者の関与(UI) | 要 |
| 影響の想定範囲(S) | 変更あり |
| 機密性への影響(C) | 低 |
| 完全性への影響(I) | 低 |
| 可用性への影響(A) | なし |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 9.0.1 | 9.0.116 | |||
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 10.1.0 | 10.1.53 | |||
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 11.0.0 | 11.0.20 | |||
| cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:* | |||||
| cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:* | |||||
| cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:* | |||||
| cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:* | |||||
| cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:* | |||||