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Fencer Intel
low 3.5

CVE-2021-25075 json

Duplicate Page or Post < 1.5.1 - Arbitrary Settings Update to Stored XSS

published 4y ago modified 4mo ago also EUVD-2021-11987

cvss
3.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known, plus a Nuclei check

Summary

The Duplicate Page or Post WordPress plugin before 1.5.1 does not have any authorisation and has a flawed CSRF check in the wpdevart_duplicate_post_parametrs_save_in_db AJAX action, allowing any authenticated users, such as subscriber to call it and change the plugin's settings, or perform such attack via CSRF. Furthermore, due to the lack of escaping, this could lead to Stored Cross-Site Scripting issues

Patch / fix

  • wpdevart duplicate_page_or_post 1.5.1

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Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template WordPress Duplicate Page or Post <1.5.1 - Cross-Site Scripting nuclei detection template
  • wpscan.com https://wpscan.com/vulnerability/db5a0431-af4d-45b7-be4e-36b6c90a601b referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 3.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

  • Unknown Duplicate Page or Post

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel 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.