CVE-2026-18353

PIA's `POST /v1/upload/sbom` endpoint accepts a Bearer JWT and checks its **unverified** `iss` claim against an issuer allowlist using Python's `urlparse` before performing OIDC discovery with `requests`. Because `urlparse` and `requests`/`urllib3` parse an authority string containing a backslash (e.g. `https://attacker-host\@ci.eclipse.org/`) into *different* hostnames, an attacker can craft an issuer that passes the allowlist check yet drives `requests` — and subsequently `urllib.request.urlopen` for JWKS retrieval — to connect to an arbitrary attacker-chosen host, port, and scheme.

CVSS

No CVSS.

References

Link	Resource
https://github.com/eclipse-csi/pia/security/advisories/GHSA-v249-9xjm-qhgf
https://github.com/eclipse-csi/pia/security/advisories/GHSA-v249-9xjm-qhgf

Configurations

No configuration.

History

30 Jul 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/eclipse-csi/pia/security/advisories/GHSA-v249-9xjm-qhgf -~~	() https://github.com/eclipse-csi/pia/security/advisories/GHSA-v249-9xjm-qhgf -

30 Jul 2026, 08:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-30 08:16

Updated : 2026-07-30 19:12

NVD link : CVE-2026-18353

Mitre link : CVE-2026-18353

CVE.ORG link : CVE-2026-18353

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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