CVE-2020-13483 json
The Web Application Firewall in Bitrix24 through 20.0.0 allows XSS via the items[ITEMS][ID] parameter to the components/bitrix/mobileapp.li…
published 2020-06-24 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-5733
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.5%
- EPSS 4.5% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
The Web Application Firewall in Bitrix24 through 20.0.0 allows XSS via the items[ITEMS][ID] parameter to the components/bitrix/mobileapp.list/ajax.php/ URI.
Exploit prediction
4.51% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Bitrix24 <=20.0.0 - Cross-Site Scripting nuclei detection template
- gist.github.com https://gist.github.com/mariuszpoplwski/ca6258cf00c723184ebd2228ba81f558 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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
gist.github.com
/mariuszpoplwski/ca6258cf00c723184ebd2228ba81f558
exploit, third-party-advisory
Sources
- CVE List CVE-2020-13483
- NVD CVE-2020-13483
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.