Profile Builder < 3.4.8 - Authenticated Stored XSS

published 2021-08-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11360

cvss: 4.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

The User Registration & User Profile – Profile Builder WordPress plugin before 3.4.8 does not sanitise or escape its 'Modify default Redirect Delay timer' setting, allowing high privilege users to use JavaScript code in it, even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue

Patch / fix

fixed in 1

cozmoslabs profile_builder 3.4.8

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

wpscan.com https://wpscan.com/vulnerability/81e42812-93eb-480d-a2d2-5ba5e02dd0ba referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

Unknown User Registration & User Profile – Profile Builder

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/81e42812-93eb-480d-a2d2-5ba5e02dd0ba
exploit, third-party-advisory

Sources

CVE List CVE-2021-24448
NVD CVE-2021-24448

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.

Summary