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Fencer Vulns
medium 6.5

CVE-2024-2509 json

Gutenberg Blocks by Kadence Blocks < 3.2.26 - Contributor+ Stored XSS

published 2024-04-05 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-27458

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

The Gutenberg Blocks by Kadence Blocks WordPress plugin before 3.2.26 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

Patch / fix

  • Unknown Gutenberg Blocks by Kadence Blocks 3.2.26
  • wpdownloadmanager gutenberg_blocks_for_wordpress_download_manager 3.2.26

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/dec4a632-e04b-4fdd-86e4-48304b892a4f/ referenced PoC, tagged "exploit" by a source, unverified
  • research.cleantalk.org https://research.cleantalk.org/cve-2024-2509/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Affected products

  • Unknown Gutenberg Blocks by Kadence Blocks
  • wpdownloadmanager gutenberg_blocks_for_wordpress_download_manager

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.