PT-2026-66438 · Eclipse Foundation · Eclipse Csi - Pia
CVE-2026-18353
·
Published
2026-07-30
·
Updated
2026-07-30
CVSS v4.0
8.8
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
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.Exploit
Fix
SSRF
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Weakness Enumeration
Related Identifiers
Affected Products
Eclipse Csi - Pia