CVE-2026-54774
CoreWCF: SamlSerializer skips SignatureValue verification when SAML signing token is not an X.509 certificate
描述
### Impact When a service is configured to validate SAML tokens using a method other than X.509 certificate signing, the final signature verification is skipped. #### Preconditions The service is configured to authenticate using SAML tokens and an out of band token resolver (commonly the IssuerTokenResolver of IssuedTokenServiceCredential) holds a non-X.509 SecurityToken whose key identifier the attacker can reference in the assertion’s `<KeyInfo>` - for example a `BinarySecretSecurityToken` representing the symmetric proof key issued by a WS-Trust symmetric-key holder-of-key STS. ### Patches Fixed in CoreWCF v1.8.1 and v1.9.1 ### Workarounds None
如何修補 CVE-2026-54774
要修補 CVE-2026-54774,請將受影響套件升級到下列已修補版本。
- —升級至 1.8.1 或更新版本
CVE-2026-54774 正在被利用嗎?
目前沒有被利用訊號。CVE-2026-54774 既不在 CISA KEV 也沒有最新的 EPSS 分數。
受影響套件(1)
- from 0, < 1.8.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |