Perfect Survey < 1.5.2 - Unauthenticated Stored Cross-Site Scripting

published 2022-02-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11677

cvss: 6.1; 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 72%
public exploits: 0; none known

The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header value before outputting it in the statistic page when the Anonymize IP setting of a survey is turned off, leading to a Stored Cross-Site Scripting issue

Patch / fix

fixed in 1

getperfectsurvey perfect_survey 1.5.2

Exploit prediction

1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

wpscan.com https://wpscan.com/vulnerability/4440e7ca-1a55-444d-8f6c-04153302d750 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

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/4440e7ca-1a55-444d-8f6c-04153302d750
exploit, third-party-advisory

Sources

CVE List CVE-2021-24765
NVD CVE-2021-24765

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