Medium severity · published Apr 9, 2024
CVE-2023-6486
Spectra – WordPress Gutenberg Blocks <= 2.10.3 - Authenticated(Contributor+) Cross-Site Scripting via Custom CSS
5.4
CVSS
0.6%
EPSS
No
On KEV
Description
The Spectra – WordPress Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Custom CSS metabox in all versions up to and including 2.10.3 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)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SG
Spectra Gutenberg Blocks – Website Builder for the Block Editor · brainstormforce
through 2.10.3 · source: vendor
SP
Spectra · Brainstormforce
before 2.10.4 · source: NVD
Affected product
SG
Spectra Gutenberg Blocks – Website Builder for the Block Editor
brainstormforce
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-6486
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-6486
Exploit
https://advisory.abay.sh/cve-2023-6486
Patch
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3042670%40ultimate-addons-for-gutenberg%2Ftrunk&old=3037142%40ultimate-addons-for-gutenberg%2Ftrunk&sfp_email=&sfph_mail=
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/d4933a30-974f-487d-9444-b0ea1283a09c?source=cve
Exploit
https://youtu.be/t5K745dBsT0
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