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PatchSiren cyber security CVE debrief

CVE-2026-13546 Feehi CVE debrief

CVE-2026-13546 is a medium-severity vulnerability in Feehi CMS, affecting its REST API endpoint. The vulnerability allows for missing authentication and can be exploited remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet. The CVE was published on June 29, 2026, and has a CVSS score of 5.5.

Vendor
Feehi
Product
CMS
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-29
Original CVE updated
2026-06-29
Advisory published
2026-06-29
Advisory updated
2026-06-29

Who should care

Organizations using Feehi CMS version 2.1.1 or earlier should prioritize patching this vulnerability. The vulnerability's remote exploitability and public exploit availability increase the urgency for defenders to take action. Security teams responsible for CMS platforms should assess their exposure and implement compensating controls if patches cannot be applied immediately.

Technical summary

The vulnerability affects the /api/articles endpoint of the REST API in Feehi CMS version 2.1.1 and earlier. It allows for missing authentication, potentially enabling unauthorized access to article data or manipulation. The vulnerability is tracked under CWE-287 (Improper Authentication) and CWE-306 (Missing Authentication). The CVSS:4.0 vector is AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

Apply patches as soon as available. Implement compensating controls such as IP restrictions or API key authentication for the REST API endpoint until patches can be applied.

Recommended defensive actions

  • Apply patches as soon as available.
  • Implement compensating controls such as IP restrictions or API key authentication for the REST API endpoint until patches can be applied.
  • Monitor API usage for suspicious activity.
  • Perform a thorough inventory of Feehi CMS instances within the organization.
  • Update incident response plans to include this vulnerability.

Evidence notes

The CVE was published on June 29, 2026, with a CVSS score of 5.5. The vulnerability affects Feehi CMS version 2.1.1 and earlier. The exploit has been made public, and the project has been informed but has not responded. The CVE is based on information from Vuldb and NVD.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-13546 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-13546

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-13546 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-13546

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.