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Response snapshot Oct 31, 2026, 01:26 UTC

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VulnerabilityCVE-2026-116677

OpenWISP Controller CA CRL REST API does not scope requests to managed organizations

The authenticated REST API endpoint for downloading a CA Certificate Revocation List resolves the requested CA without applying the organization-scoped queryset used by the rest of the PKI API.

At a glance

Exploited
Not known
Severity
5.3 Medium (CVSS 4.0)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: openwisp-controller: 1.3.2. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-9gh4-xw24-9xh5 (opens a new tab)

What happened

Summary

The authenticated REST API endpoint for downloading a CA Certificate Revocation List resolves the requested CA without applying the organization-scoped queryset used by the rest of the PKI API.

An organization manager with CA view permission can request another organization's sequential CA ID and receive that CA's CRL. The endpoint is intended to be authenticated and organization-scoped, so it should use the same access-control path as GET /api/v1/controller/ca/ /.

Affected endpoint

Continue reading
GET /api/v1/controller/ca/ /crl

CrlDownloadView inherits ProtectedAPIMixin, which requires an authenticated organization manager with the relevant model permission. However, retrieve() resolves the CA with get_object_or_404(Ca, pk=kwargs["pk"]). This bypasses FilterByOrganizationManaged and does not perform an object-level permission check.

Consequently, a manager of organization A can enumerate CA integer IDs and retrieve the CRL for a CA belonging to organization B. The sibling CA detail endpoint is correctly organization-scoped and returns 404 for the same cross-organization request.

Impact

The endpoint returns only the CRL, including CA issuer information and revoked certificate serial numbers. It does not disclose CA private keys and does not permit modification.

django-x509 exposes CRLs publicly by default unless DJANGO_X509_CRL_PROTECTED = True. Therefore, the default configuration does not gain a new confidentiality exposure from this REST API behavior. Nonetheless, the endpoint is part of the authenticated, organization-scoped REST API and does not enforce its intended authorization boundary.

Deployments that explicitly protect CRLs have a stronger expectation that this endpoint will scope access to the requester's managed organizations. The practical impact is low, but the authorization behavior should be corrected for consistency and defense in depth.

Remediation

Resolve the CA through the view's organization-scoped queryset. Set queryset = Ca.objects.all(), replace the direct get_object_or_404(Ca, pk=kwargs["pk"]) lookup with self.get_object(), and add a regression test that a same-organization manager receives 200 while a manager of another organization receives 404.

Affected package ranges reported by GitHub: openwisp-controller: >= 1.0.0, < 1.3.2

Scores and how they were measured

CVSS base severity

5.3

Version 4.0As of

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-9gh4-xw24-9xh5 (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-9gh4-xw24-9xh5, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 30). OpenWISP Controller CA CRL REST API does not scope requests to managed organizations (CVE-2026-116677). https://kevwire.com/record/CVE-2026-116677

MLA

"OpenWISP Controller CA CRL REST API does not scope requests to managed organizations (CVE-2026-116677)." KEVWire, 30 Oct. 2026, kevwire.com/record/CVE-2026-116677.

Chicago

KEVWire. "OpenWISP Controller CA CRL REST API does not scope requests to managed organizations (CVE-2026-116677)." Last modified October 30, 2026. https://kevwire.com/record/CVE-2026-116677.

Evidence summary (plain text)

OpenWISP Controller CA CRL REST API does not scope requests to managed organizations (Oct 30, 2026).
The authenticated REST API endpoint for downloading a CA Certificate Revocation List resolves the requested CA without applying the organization-scoped queryset used by the rest of the PKI API.

An organization manager with CA view permission can request another organization's sequential CA ID and receive that CA's CRL. The endpoint is intended to be authenticated and organization-scoped, so it should use the same access-control path as GET /api/v1/controller/ca/ /.
CVSS 5.3 (version 4.0; evidence as of Oct 30, 2026; https://github.com/advisories/GHSA-9gh4-xw24-9xh5).
Sources:
GitHub-reviewed advisory GHSA-9gh4-xw24-9xh5: https://github.com/advisories/GHSA-9gh4-xw24-9xh5
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-116677.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 31, 2026, 00:50 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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