CVE-2021-24275 json
Popup by Supsystic < 1.10.5 - Reflected Cross-Site scripting (XSS)
published 5y ago modified 4mo ago also EUVD-2021-11189
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 18.2%
- EPSS 18.2% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB, plus a Nuclei check
Summary
The Popup by Supsystic WordPress plugin before 1.10.5 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue
Patch / fix
- supsystic popup 1.10.5
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- Published
- First public exploit (EDB-50346)
Exploit prediction
18.17% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-50346 WordPress Plugin Popup 1.10.4 - Reflected Cross-Site Scripting (XSS) webapps, 2021-09-28
- Nuclei template Popup by Supsystic <1.10.5 - Cross-Site scripting nuclei detection template
- wpscan.com https://wpscan.com/vulnerability/efdc76e0-c14a-4baf-af70-9d381107308f referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com http://packetstormsecurity.com/files/164311/WordPress-Popup-1.10.4-Cross-Site-Scripting.html 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
- Supsystic Popup by Supsystic
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/efdc76e0-c14a-4baf-af70-9d381107308f
exploit, third-party-advisory
-
packetstormsecurity.com
/files/164311/WordPress-Popup-1.10.4-Cross-Site-Scripting.html
exploit, third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-24275
- NVD CVE-2021-24275
Fencer Intel 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.