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Medium severity · published Feb 5, 2024
CVE-2023-6526
Meta Box – WordPress Custom Fields Framework <= 5.9.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
5.4
CVSS
0.4%
EPSS
No
On KEV
Description
The Meta Box – WordPress Custom Fields Framework plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom post meta values displayed through the plugin's shortcode in all versions up to, and including, 5.9.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
Meta Box · metabox
through 5.9.2 · source: vendor, NVD
Affected product
MB
Meta Box
metabox
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6526
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-6526
Patch
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3030376%40meta-box&new=3030376%40meta-box&sfp_email=&sfph_mail=
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/2a6bfc87-6135-4d49-baa2-e8e6291148dc?source=cve
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