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Fencer Vulns
medium 6.1

CVE-2021-24372 json

WP Hardening < 1.2.2 - Reflected XSS via URI

published 2021-06-21 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11285

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits
0
none known

Summary

The WP Hardening – Fix Your WordPress Security WordPress plugin before 1.2.2 did not sanitise or escape the $_SERVER['REQUEST_URI'] before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue.

Patch / fix

  • getastra wp_hardening 1.2.2

Exploit prediction

0.83% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/5340ae4e-95ba-4a69-beb1-3459cac17782 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 WP Hardening – Fix Your WordPress Security

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.