Trending
CVE-2026-9227

CVE detail

CVE-2026-9227

The GutenBee – Gutenberg Blocks plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.20.1 via the gutenbee_file_and_ext_json function. This is due to a flawed strpos() substring check that only verifies whether the filename contains the string '.json' rather than confirming the filename ends with a .json extension, allowing double-extension filenames like shell.json.php to bypass validation. This makes it possible for authenticated attackers, with author-level access and above, to upload files that may be executable, which makes remote code execution possible.

CVSS 8.8 · HighBuzz score 44.0

Buzz score

Why this CVE is surfacing

Buzz score total 44.0

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 24.0 · diversity 20.0 · KEV 0.0 · OTX 0.0 · PoC 0.0

Mention score

24.0

10 evidence mentions in the snapshot

Diversity score

20.0

4 sources across 4 categories

KEV score

0.0

No KEV entry observed

OTX score

0.0

0 OTX pulses

PoC score

0.0

0 repos · best confidence N/A

Best PoC traction

Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions: 0; within the 30d window
Peak daily: 0; highest bucket

Evidence

Source links by recency

Newest mentions first

10 source links · newest first

Wordfence Intelligence Weekly WordPress Vulnerability Report (May 25, 2026 to May 31, 2026)Wordfence
Last week, there were 277 vulnerabilities disclosed in 184 WordPress Plugins and 70 WordPress Themes that have been added to the Wordfence Intelligence Vulnerability Database, and there were 93 Vulnerability Researchers that contributed to WordPress Security last week. Review those vulnerabilities in this report now to ensure your site is not affected. Our mission with Wordfence Intelligence is to make valuable vulnerability information easily accessible to everyone, like the WordPress community
vendorwww.wordfence.comJun 4, 2026, 3:03 PM
https://www.wordfence.com/threat-intel/vulnerabilities/id/2d20e8c9-975d-4e8c-8bea-50935853c7d4?source=cvewww.wordfence.com
No excerpt available.
Third Party Advisorywww.wordfence.comMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3543574%40gutenbee&new=3543574%40gutenbee&sfp_email=&sfph_mail=plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.1/gutenbee.php#L579plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.1/gutenbee.php#L571plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.1/gutenbee.php#L570plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.0/gutenbee.php#L579plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.0/gutenbee.php#L571plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.0/gutenbee.php#L570plugins.trac.wordpress.org
No excerpt available.
Patchplugins.trac.wordpress.orgMay 28, 2026, 8:16 AM
https://github.com/cssigniter/gutenbee/commit/bde934cdecf67a4de1d6548cc1fc6c59bc6690e5github.com
No excerpt available.
Exploitgithub.comMay 28, 2026, 8:16 AM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars

No public PoC repositories have been matched yet.

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5 mentions

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2026-9227.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

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Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

Product query unavailableNo valid raw CPE 2.3 product record is available for this CVE, so no product-level Shodan query is shown.

Exact CVE query

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vuln:CVE-2026-9227Search this CVE on Shodan

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Metadata

Canonical fields

NVD status

Deferred

Published

May 28, 2026

Modified

Jun 17, 2026

Official record

Authoritative NVD record

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE IDs

Vendor classifications

Unavailable

How this vector reads

CVSS 3.1 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Attack Vector (AV): Network. The vulnerable system can be reached across network boundaries.
Attack Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Privileges Required (PR): Low. The attacker needs basic user-level privileges.
User Interaction (UI): None. Exploitation does not require another user to act.
Scope (S): Unchanged. Impacts remain within the vulnerable security authority.
Confidentiality Impact (C): High. There is a total or serious impact to this security property.
Integrity Impact (I): High. There is a total or serious impact to this security property.
Availability Impact (A): High. There is a total or serious impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses