CVE-2021-24918 json
Smash Balloon Social Post Feed < 4.0.1 - Subscriber+ Arbitrary Plugin Settings Update to Stored XSS
published 2021-11-29 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11830
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 52%
- public exploits
- 0
- none known
Summary
The Smash Balloon Social Post Feed WordPress plugin before 4.0.1 did not have any privilege or nonce validation before saving the plugin's setting. As a result, any logged-in user on a vulnerable site could update the settings and store rogue JavaScript on each of its posts and pages.
Patch / fix
- smashballoon smash_balloon_social_post_feed 4.0.1
Exploit prediction
0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- jetpack.com https://jetpack.com/2021/10/29/security-issues-patched-in-smash-balloon-social-post-feed-plugin/ 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
References
-
jetpack.com
/2021/10/29/security-issues-patched-in-smash-balloon-social-post-feed-plugin/
exploit, third-party-advisory
-
wpscan.com
/vulnerability/5d252ad7-bf28-44f3-8cd0-c4fe05c48f35
third-party-advisory
Sources
- CVE List CVE-2021-24918
- NVD CVE-2021-24918
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