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PatchSiren cyber security CVE debrief

CVE-2026-1291 tigroumeow CVE debrief

The Meow Gallery plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode in all versions up to, and including, 5.4.4. This makes it possible for authenticated attackers, with Author-level access and above, to arbitrarily create or overwrite existing gallery shortcode records by supplying a user-controlled id value. The endpoint performs database update operations without verifying that the requesting user is authorized to modify the referenced gallery record or create their own.

Vendor
tigroumeow
Product
Meow Gallery
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-13
Original CVE updated
2026-06-15
Advisory published
2026-06-13
Advisory updated
2026-06-15

Who should care

Users of the Meow Gallery plugin for WordPress, particularly those with Author-level access and above, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability is caused by a missing capability check on the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode. This allows authenticated attackers with Author-level access and above to modify data without proper authorization.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update the Meow Gallery plugin to a version that includes a fix for this vulnerability.
  • Restrict access to the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode to only authorized users.
  • Monitor for suspicious activity on the REST API endpoint /wp-json/meow-gallery/v1/save_shortcode.

Evidence notes

The vulnerability was reported by [email protected] and is tracked in the WordPress plugin repository.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-1291 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-1291

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

  • CVE-2026-1291 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-1291

    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.