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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.urlop
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a8f175f498ccf6abd55776b78715081546f34b52e03beb7e5b5fded9e5c761e8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"Eclipse CSI - PIA","repo":"https://github.com/eclipse-csi/pia","vendor":"Eclipse Foundation","versions":[{"lessThan":"0.6.0","status":"affected","version":"0.4.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7fe93a6bcf3dc38b9772f8fe8a1ca8517ded6cc43ac8ba457f21c7b7442b5969 · sha256:78f3319e05586ee6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.8,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7fe93a6bcf3dc38b9772f8fe8a1ca8517ded6cc43ac8ba457f21c7b7442b5969 · sha256:78f3319e05586ee6… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7fe93a6bcf3dc38b9772f8fe8a1ca8517ded6cc43ac8ba457f21c7b7442b5969 · sha256:78f3319e05586ee6… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/eclipse-csi/pia/security/advisories/GHSA-v249-9xjm-qhgf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7fe93a6bcf3dc38b9772f8fe8a1ca8517ded6cc43ac8ba457f21c7b7442b5969 · sha256:78f3319e05586ee6… · /containers/adp/0/references/0
{"url":"https://github.com/eclipse-csi/pia/security/advisories/GHSA-v249-9xjm-qhgf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7fe93a6bcf3dc38b9772f8fe8a1ca8517ded6cc43ac8ba457f21c7b7442b5969 · sha256:78f3319e05586ee6… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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