Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| sigstore | fulcio | affected |
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Sigstore | Fulcio | — |
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-59jp-pj84-45mr | Fulcio is vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.232% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Linuxfoundation
Linuxfoundation fulcio |
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| CPEs | cpe:2.3:a:linuxfoundation:fulcio:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linuxfoundation
Linuxfoundation fulcio |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Type | Values Removed | Values Added |
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| First Time appeared |
Sigstore
Sigstore fulcio |
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| Vendors & Products |
Sigstore
Sigstore fulcio |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Description | 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. | |
| Title | Fulcio vulnerable to Server-Side Request Forgery (SSRF) via MetaIssuer Regex Bypass | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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