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TI-2026-81453 Aliases CVE-2026-116677GHSA-9gh4-xw24-9xh5

OpenWISP Controller CRL API exposes other organizations' CRLs

Priority LOW 23CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

OpenWISP Controller from 1.0.0 before 1.3.2 does not limit the GET /api/v1/controller/ca/<integer-id>/crl endpoint to the organizations a manager is allowed to manage. An authenticated organization manager with CA view permission can retrieve another organization's certificate revocation list by requesting its sequential CA identifier, which is a missing authorization check (CWE-862). An attacker on the network with low privileges can read CA issuer information and revoked certificate serial numbers, but cannot read CA private keys or modify data.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

OpenWISP Controller is a network and WiFi controller for provisioning, configuration management, updates, and PKI management. From 1.0.0 until 1.3.2, the GET /api/v1/controller/ca/<integer-id>/crl endpoint allows an authenticated organization manager with CA view permission to retrieve another organization's certificate revocation list by requesting its sequential CA identifier. CrlDownloadView.retrieve resolves the CA directly instead of using the organization-scoped object retrieval enforced by FilterByOrganizationManaged, bypassing the endpoint's intended authorization boundary. The response can disclose CA issuer information and revoked certificate serial numbers, but it does not expose CA private keys or allow modification. This issue is fixed in version 1.3.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00175 6th percentileScored 2026-11-07
Fix Fixed openwisp-controller (openwisp): 1.3.2openwisp-controller (PyPI): 1.3.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
openwispopenwisp-controller1.0.0 to before 1.3.21.3.2Patch availableCNA
—openwisp-controller (PyPI)1.0.0 to before 1.3.21.3.2Patch availableGHSA-9gh4-xw24-9xh5
  • openwisp-controller Vendoropenwisp Affected 1.0.0 to before 1.3.2 Fixed in 1.3.2 Patch available CNA
  • openwisp-controller (PyPI) Vendor— Affected 1.0.0 to before 1.3.2 Fixed in 1.3.2 Patch available GHSA-9gh4-xw24-9xh5

Remediation

Update openwisp-controller to version 1.3.2 or later, which fixes the issue on PyPI and in the openwisp source.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA openwisp-controller (openwisp) Fixed in 1.3.2
  • Fix · GHSA-9gh4-xw24-9xh5 openwisp-controller (PyPI) Fixed in 1.3.2 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-116677
  2. 2026-10-30 Alias added: GHSA-9gh4-xw24-9xh5
  3. 2026-10-30 Fix available: PyPI/[email protected] · GHSA-9gh4-xw24-9xh5
  4. 2026-10-30 CVSS score added · GHSA-9gh4-xw24-9xh5
  5. 2026-10-30 Weakness changed · GHSA-9gh4-xw24-9xh5
  6. 2026-10-30 6 new references · GHSA-9gh4-xw24-9xh5
  7. 2026-11-02 CISA SSVC decision points changed
  8. 2026-11-06 Affected versions changed · Red Hat
  9. 2026-11-06 CVSS score added · Red Hat

References

Advisory 1

Other 5

Sources

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