YOP Poll < 6.2.8 - Stored Cross-Site Scripting

published 2021-07-12 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11366

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits: 0; none known

In the YOP Poll WordPress plugin before 6.2.8, when a pool is created with the options "Allow other answers", "Display other answers in the result list" and "Show results", it can lead to Stored Cross-Site Scripting issues as the 'Other' answer is not sanitised before being output in the page. The execution of the XSS payload depends on the 'Show results' option selected, which could be before or after sending the vote for example.

Patch / fix

fixed in 1

yop-poll yop_poll 6.2.8

Exploit prediction

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

wpscan.com https://wpscan.com/vulnerability/48ade7a5-5abb-4267-b9b6-13e31e1b3e91 referenced PoC, tagged "exploit" by a source, unverified
in-spired.xyz https://www.in-spired.xyz/discovering-wordpress-plugin-yop-polls-v6-2-7-stored-xss/ 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 YOP Poll

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/48ade7a5-5abb-4267-b9b6-13e31e1b3e91
exploit, third-party-advisory
in-spired.xyz /discovering-wordpress-plugin-yop-polls-v6-2-7-stored-xss/
exploit, third-party-advisory

Sources

CVE List CVE-2021-24454
NVD CVE-2021-24454

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