CVE-2026-27886
Strapi is an open source headless content management system.
Published May 14, 2026 · corrected/updated Jun 17, 2026 · strapi strapi · evidence confidence medium
Strapi is an open source headless content management system. Strapi versions starting in 4.0.0 and prior to 5.37.0 did not sufficiently sanitize query parameters when filtering content via relational fields. An unauthenticated attacker could use the query parameter on any publicly-accessible content-type with an (or other admin-relation) field to perform a boolean-oracle attack against private fields on the joined table, including the field. Extracting an admin reset token via this oracle made full administrative account takeover possible without authentication. When a filter such as was applied to a public Content API endpoint, the underlying query generation performed a against the table and emitted a clause referencing the joined column. The query parameter sanitization layer did not block operator chains that traversed into relational target schemas the caller had no read permission on, allowing the response count to be used as a one-bit oracle on any admin-table field. The patch in version 5.37.0 introduces explicit query-parameter sanitization at the controller and service boundary via three new primitives: , , and . Operator chains that traverse into restricted relational targets are now rejected before reaching the database.
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-27886 is a critical public vulnerability record for strapi strapi. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether strapi strapi is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: strapi/strapi. Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 9.2. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-200, CWE-22, CWE-943. Sources contributing to this record: cve_org, nvd. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
May 14, 2026 · NIST NVD
Detected
Strapi is an open source headless content management system. Strapi versions starting in 4.0.0 and prior to 5.37.0 did not sufficiently sanitize query parameters when filtering content via relational fields. An unauthenticated attacker could use the query parameter on any publicly-accessible content-type with an (or other admin-relation) field to perform a boolean-oracle attack against private fie
Jun 17, 2026 · NIST NVD
Updated
Strapi is an open source headless content management system. Strapi versions starting in 4.0.0 and prior to 5.37.0 did not sufficiently sanitize query parameters when filtering content via relational fields. An unauthenticated attacker could use the query parameter on any publicly-accessible content-type with an (or other admin-relation) field to perform a boolean-oracle attack against private fie
Affected
- cpe strapi/strapiversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-27886
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-27886
Strapi is an open source headless content management system. Strapi versions starting in 4.0.0 and prior to 5.37.0 did not sufficiently sanitize query parameters when filtering content via relational fields. An unauthenticated attacker could use the query parameter on any
nvd.nist.gov