CVE-2026-44394
OpenStack Keystone's federated token rescoping mechanism doesn't propagate the original token's expiry to the newly issued token
描述
An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone federated token rescoping mechanism does not propagate the original token's expiry to the newly issued token. When a federated user rescopes a token via POST /v3/auth/tokens, the handle_scoped_token() function in the mapped authentication plugin returns response data without an expires_at value. The token provider falls back to issuing a token with a fresh default TTL. By rescoping repeatedly before each token expires, a user can maintain access indefinitely, bypassing operator-configured token lifetime policies. This is a variant of CVE-2012-3426. Only deployments using federated identity (SAML2, OpenID Connect) are affected.
如何修補 CVE-2026-44394
要修補 CVE-2026-44394,請將受影響套件升級到下列已修補版本。
- —升級至 27.0.2 或更新版本
CVE-2026-44394 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 14.0.0, < 27.0.2, >= 28.0.0, < 28.0.2, >= 29.0.0, < 29.0.2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |