EUVD-2026-41259Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Unauthenticated network endpoint (PR:N/AV:N) exploited via a trivial string trick (AC:L); accepting attacker-signed JWTs breaks authentication (I:H) and SSRF exposes internal responses (C:L), with no availability impact.
Primary rating from Vendor (eclipse).
CVSS VectorVendor: eclipse
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
PIA's OIDC issuer allowlist for Jenkins tokens uses a bare string-prefix check (issuer.startswith(' https://ci.eclipse.org ') in is_issuer_known, pia/models.py:139) instead of validating the issuer as a properly host-bounded URL. An attacker can craft an issuer such as https://ci.eclipse.org@evil.host (userinfo trick) or https://ci.eclipse.org.evil.host (suffix trick) that satisfies the prefix check while pointing the OIDC discovery and JWKS fetches at a server the attacker controls. An unauthenticated caller of POST /v1/upload/sbom can use this to force PIA to make outbound HTTP(S) requests to an arbitrary attacker-chosen host, and to have oidc.verify_token accept a JWT signed with the attacker's own key.
AnalysisAI
Server-side request forgery and OIDC token forgery in Eclipse CSI PIA lets an unauthenticated attacker abuse a flawed Jenkins issuer allowlist (a bare startswith('https://ci.eclipse.org') check in is_issuer_known, pia/models.py:139) to redirect OIDC discovery and JWKS fetches to an attacker-controlled host. By posting a crafted issuer such as https://ci.eclipse.org@evil.host or https://ci.eclipse.org.evil.host to POST /v1/upload/sbom, an attacker forces PIA to make outbound requests to arbitrary hosts and to accept a JWT signed with the attacker's own key, effectively bypassing token verification. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to PIA's unauthenticated POST /v1/upload/sbom endpoint and that PIA use the vulnerable Jenkins OIDC issuer allowlist (the `is_issuer_known` prefix check in pia/models.py:139), which is the shipped/default logic. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N, score 8.2) is internally consistent with the description: the vulnerable endpoint POST /v1/upload/sbom is explicitly unauthenticated (PR:N), network-reachable (AV:N), needs no user interaction (UI:N), and the exploitation technique is a simple string trick (AC:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker sends a crafted SBOM upload to POST /v1/upload/sbom with a token whose issuer is `https://ci.eclipse.org@attacker.example` or `https://ci.eclipse.org.attacker.example`, which passes PIA's prefix allowlist. PIA then fetches OIDC discovery and JWKS documents from the attacker's server and accepts a JWT the attacker signed with their own key, granting forged token acceptance and forcing outbound SSRF requests. … |
| Remediation | No vendor-released patch identified at time of analysis; the provided references point only to the Eclipse GitLab CVE-assignment work item (https://gitlab.eclipse.org/security/cve-assignment/-/work_items/154) and do not name a fixed version, so operators should consult the Eclipse Foundation security team for a patched release before deploying. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Determine whether Eclipse CSI PIA is deployed in your environment and whether the POST /v1/upload/sbom endpoint is internet-accessible or reachable from untrusted networks. …
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External POC / Exploit Code
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