GHSA-4mq7-pvjg-xp2r · 深刻度： high · エコシステム： go — Ory Oathkeeper has an authentication bypass by cache key confusion
ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The `oauth2_introspection` authenticator cache does not distinguish tokens that were validated with different introspection URLs. An attacker can therefore legitimately use a token to prime the cache, and subsequently use the same token for rules that use a different introspection server. Ory Oathkeeper has to be configured with multiple `oauth2_introspection` authenticator servers, each accepting different tokens. The authenticators also must be configured to use caching. An attacker has to have a way to gain a valid token for one of the configured introspection servers. Starting in version 26.2.0, Ory Oathkeeper includes the introspection server URL in the cache key, preventing confusion of tokens. Update to the patched version of Ory Oathkeeper. If that is not immediately possible, disable caching for `oauth2_introspection` authenticators.
総合評価: CVE-2026-33496 は中リスク（41.4/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.33%、25 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.06% | 0.33% | +0.27% |
| 2 | 2026-05-22 | 0.16% | 0.06% | -0.09% |
| 3 | 2026-04-08 | — | 0.16% | — |
EPSS の全履歴 （全 4 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.1 | 3.1 | HIGH |
|
2.8 | 5.2 | [email protected] |
GHSA-4mq7-pvjg-xp2r · 深刻度： high · エコシステム： go — Ory Oathkeeper has an authentication bypass by cache key confusion
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| ory | oathkeeper | < 26.2.0 | cpe:2.3:a:ory:oathkeeper:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/ory/oathkeeper/commit/198a2bc82a99e0a77bd0ffe290cbdd5285a1b17c | Patch |
| https://github.com/ory/oathkeeper/security/advisories/GHSA-4mq7-pvjg-xp2r | Mitigation Vendor Advisory |