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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 a
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b889f17b70a48cfe31c270385f871960dcf74de724636d6148dc60af1e8725b9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"GutenBee – Gutenberg Blocks","vendor":"cssigniterteam","versions":[{"lessThanOrEqual":"2.20.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-434","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/problemTypes/0/descriptions/0

Source references

9 source assertions
{"url":"https://github.com/cssigniter/gutenbee/commit/bde934cdecf67a4de1d6548cc1fc6c59bc6690e5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/7
{"url":"https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.0/gutenbee.php#L570"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/5
{"url":"https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.0/gutenbee.php#L571"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.0/gutenbee.php#L579"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/6
{"url":"https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.1/gutenbee.php#L570"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.1/gutenbee.php#L571"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/gutenbee/tags/2.20.1/gutenbee.php#L579"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3543574%40gutenbee&new=3543574%40gutenbee&sfp_email=&sfph_mail="}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/8
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/2d20e8c9-975d-4e8c-8bea-50935853c7d4?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7279b32ccc365bc34cfd3b5747027b76383653e9f4b3677c193655ce65325fa7 · sha256:b86b8cb4b3d2461e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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