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Fencer Vulns
medium 6.1

CVE-2021-24466 json

Verse-O-Matic <= 4.1.1 - CSRF to Stored XSS

published 2021-08-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11378

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

The Verse-O-Matic WordPress plugin through 4.1.1 does not have any CSRF checks in place, allowing attackers to make logged in administrators do unwanted actions, such as add/edit/delete arbitrary verses and change the settings. Due to the lack of sanitisation in the settings and verses, this could also lead to Stored Cross-Site Scripting issues

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/37c7bdbb-f27f-47d3-9886-69d2e83d7581 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Unknown Verse-O-Matic

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
  • CWE-352 Cross-Site Request Forgery
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.