CVE-2026-18353

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Source

https://cve.org/CVERecord?id=CVE-2026-18353

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18353.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-18353

Aliases

GHSA-v249-9xjm-qhgf

Published

2026-07-30T07:23:04.083Z

Modified

2026-08-12T03:51:28.702049854Z

Severity

8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

Unauthenticated SSRF in PIA via OIDC issuer allowlist bypass

Details

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.

Database specific

{
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18353.json",
    "cna_assigner": "eclipse"
}

References

Affected packages

Git / github.com/eclipse-csi/pia

Affected ranges

Type

GIT

Repo

https://github.com/eclipse-csi/pia

Events

Introduced

5c70fac6f60dbbead382480528122c561536f1ef

Fixed

b2180f4bc21ca5120dfa3cecec06e113ca847ff8

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0.4.0"
        },
        {
            "fixed": "0.6.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*

v0.4.0

v0.5.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18353.json"