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Fencer Vulns
medium 6.1

CVE-2022-4830 json

Paid Memberships Pro < 2.9.9 - Contributor+ Stored XSS via Shortcode

published 2023-02-13 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-52107

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
65.0%
EPSS 65.0% chance of exploitation in 30 days, percentile 99.2%
public exploits
0
none known

Summary

The Paid Memberships Pro WordPress plugin before 2.9.9 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

Patch / fix

  • Unknown Paid Memberships Pro 2.9.9

CISA SSVC

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

Exploit prediction

65.01% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/ae103336-a411-4ebf-a5f0-2f35701e364c referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • Unknown Paid Memberships Pro

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.