CVE-2021-24498 json
Calendar Event Multi View < 1.4.01 - Unauthenticated Reflected Cross-Site Scripting (XSS)
published 2021-08-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11410
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.5%
- EPSS 3.5% chance of exploitation in 30 days, percentile 89%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
The Calendar Event Multi View WordPress plugin before 1.4.01 does not sanitise or escape the 'start' and 'end' GET parameters before outputting them in the page (via php/edit.php), leading to a reflected Cross-Site Scripting issue.
Patch / fix
- dwbooster calendar_event_multi_view 1.4.01
Exploit prediction
3.54% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template WordPress Calendar Event Multi View <1.4.01 - Cross-Site Scripting nuclei detection template
- wpscan.com https://wpscan.com/vulnerability/3c5a5187-42b3-4f88-9b0e-4fdfa1c39e86 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 Calendar Event Multi View
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/3c5a5187-42b3-4f88-9b0e-4fdfa1c39e86
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24498
- NVD CVE-2021-24498
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