01 Record
CVE-2024-4268
Ultimate Blocks – WordPress Blocks Plugin <= 3.1.9 - Authenticated(Contributor+) Stored Cross-Site Scripting via Multiple Blocks
MediumPUBLISHEDCNA: Wordfence
CNA base score6.4 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
02 Description
Ultimate Blocks – WordPress Blocks Plugin <= 3.1.9 - Authenticated(Contributor+) Stored Cross-Site Scripting via Multiple Blocks
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.48% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 41.7% of scored records. A rank, not a probability.
- NVD base score
- 5.4 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2024-07-02 11:01Z2 YR AGO
- Last updated
- 2026-04-08 16:32Z6 MO AGO
- Reserved
- 2024-04-26
- Assigning CNA
- Wordfence
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.4)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
- Data version
- 5.2
- Document digest
- d7ed9543c4be9d56de93f0e3aa346a9547701e4944ba7284febb736ebe53d7ee
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/00b60b53-77bf-4640-bf2b-84e011014623?source=cve
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/advanced-heading/block.php
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/styled-box/block.php
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/how-to/block.php
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/image-slider/block.php
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/testimonial/block.php
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/changeset/3075315/ultimate-blocks
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/extensions/custom-css/class-custom-css.php?rev=3102541#L173
- plugins.trac.wordpress.orghttps://plugins.trac.wordpress.org/changeset/3108401/
- wordpress.orghttps://wordpress.org/plugins/ultimate-blocks/#developers
- gist.github.comhttps://gist.github.com/webber-naut/0a8a4f810da286392a43c4614d31712e
- www.dropbox.comhttps://www.dropbox.com/scl/fi/zh7t1qsvxkxk2dfhwd7nn/Ultimate-Blocks-Stored-XSS_POC_4.20.24.mov?rlkey=ws16dcu7f6mjd3h9emsqev7jm&e=2&st=fdr7q9h7&dl=0