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...

GHSA-P6J9-7XHC-RHWP URIjs Hostname spoofing via backslashes in URL

Impact If using affected versions to determine a URL's hostname, the hostname can be spoofed by using a backslash \ character as part of the scheme delimiter, e.g. scheme:/\hostname. If the hostname is used in security decisions, the decision may be incorrect. Depending on library usage and...