CVE-2026-22772
Fulcio is vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass in github.com/sigstore/fulcio
描述
Fulcio is a certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.5, Fulcio's metaRegex() function uses unanchored regex, allowing attackers to bypass MetaIssuer URL validation and trigger SSRF to arbitrary internal services. Since the SSRF only can trigger GET requests, the request cannot mutate state. The response from the GET request is not returned to the caller so data exfiltration is not possible. A malicious actor could attempt to probe an internal network through Blind SSRF. This vulnerability is fixed in 1.8.5.
如何修補 CVE-2026-22772
要修補 CVE-2026-22772,請將受影響套件升級到下列已修補版本。
- —未列出修補版本
- —升級至 1.8.5 或更新版本
- —升級至 1.8.5 或更新版本
CVE-2026-22772 正在被利用嗎?
低 — EPSS 為 0.0%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0
- from 0, < 1.8.5
- from 0, < 1.8.5
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |