GenerateBlocks < 1.4.0 - Contributor+ Stored Cross-Site Scripting
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
The GenerateBlocks WordPress plugin before 1.4.0 does not validate the generateblocks/container block's tagName attribute, which could allow users with a role as low as contributor to perform Cross-Site Scripting attacks.
Why it matters now
EPSS 0.00624 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed GenerateBlocks (Unknown): 1.4.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | GenerateBlocks | 1.4.0 to before 1.4.0 | 1.4.0 | Patch available | CNA |
- GenerateBlocks VendorUnknown Affected 1.4.0 to before 1.4.0 Fixed in 1.4.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:generateblocks:generateblocks:*:*:*:*:*:wordpress:*:* | before 1.4.0 | Vulnerable | Generateblocks |
- cpe:2.3:a:generateblocks:generateblocks:*:*:*:*:*:wordpress:*:* Versions before 1.4.0 Vulnerable ·Generateblocks
Remediation
- Fix · CNA GenerateBlocks (Unknown) Fixed in 1.4.0
Timeline
- 2026-10-02 Threatist record created from CVE-2021-24751
- 2026-10-03 Alias added: GHSA-f648-43x4-7j96
- 2026-11-04 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2021-24751 · CVE Program
- CVE-2021-24751 · NVD
- FIRST EPSS
- GHSA-f648-43x4-7j96 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences