CVE-2026-27886: Strapi is an open source headless content management system

Q: How do I fix CVE-2026-27886?

strapi: upgrade to 5.37.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-27886 being exploited?

CVE-2026-27886 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27886 affect?

CVE-2026-27886 affects strapi. Severity is high (CVSS 7.5). 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 coul

Q: How urgent is CVE-2026-27886?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2026-27886 is a high-severity flaw (CVSS 7.5) affecting strapi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 `where` query parameter on any publicly-accessible content-type with an `updatedBy` (or other admin-relation) field to perform a boolean-oracle attack against private fields on the joined `admin_users

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-22, CWE-200, CWE-943
Published	2026-05-14
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: strapi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-14 19:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

strapi strapi UPGRADE

Affected: >= 4.0.0 and < 5.37.0

Fixed in: 5.37.0

Safe to downgrade to: a release before 4.0.0

1. Check installed version

npm ls strapi

2. UPGRADE to 5.37.0

npm install strapi@">=5.37.0"

3. If no update is available yet, DOWNGRADE to a release before 4.0.0

npm view strapi versions npm install strapi@"<4.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: Strapi <=5.36.x - Admin Credential Enumeration

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27886?

strapi: upgrade to 5.37.0. Exact commands for each OS are on this page.

Is CVE-2026-27886 being exploited?

CVE-2026-27886 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27886 affect?

CVE-2026-27886 affects strapi. Severity is high (CVSS 7.5). 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 coul

How urgent is CVE-2026-27886?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

Software pages

Strapi vulnerabilities

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References

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