Smash Balloon Social Post Feed < 4.1.1 - Authenticated Reflected Cross-Site Scripting (XSS)

published 2022-01-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11977

cvss: 5.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits: 0; none known, plus a Nuclei check

The Smash Balloon Social Post Feed WordPress plugin before 4.1.1 was affected by a reflected XSS in custom-facebook-feed in cff-top admin page.

Patch / fix

fixed in 1

smashballoon smash_balloon_social_post_feed 4.1.1

Exploit prediction

1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template Smash Balloon Social Post Feed < 4.1.1 - Authenticated Reflected Cross-Site Scripting nuclei detection template
wpscan.com https://wpscan.com/vulnerability/ae1aab4e-b00a-458b-a176-85761655bdcc referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/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 Smash Balloon Social Post Feed

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

wpscan.com /vulnerability/ae1aab4e-b00a-458b-a176-85761655bdcc
exploit, third-party-advisory

Sources

CVE List CVE-2021-25065
NVD CVE-2021-25065

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