CVE-2021-24923 json
Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue < 3.1.25 - Reflected XSS
published 2022-01-24 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11835
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
The Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue WordPress plugin before 3.1.25 does not escape the sib-statistics-date parameter before outputting it back in an attribute, leading to a Reflected Cross-Site Scripting issue
Patch / fix
- brevo newsletter,_smtp,_email_marketing_and_subscribe 3.1.25
Exploit prediction
0.81% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/3afef591-9e00-4af8-a8a6-e04ec5e61795 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 Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/3afef591-9e00-4af8-a8a6-e04ec5e61795
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24923
- NVD CVE-2021-24923
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.