CVE-2021-45822 json
A cross-site scripting vulnerability is present in Xbtit 3.1.
published 2022-03-16 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32540
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
A cross-site scripting vulnerability is present in Xbtit 3.1. The stored XSS vulnerability occurs because /ajaxchat/sendChatData.php does not properly validate the value of the "n" (POST) parameter. Through this vulnerability, an attacker is capable to execute malicious JavaScript code.
Exploit prediction
1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- emaragkos.gr https://emaragkos.gr/infosec-adventures/xbtit-3-1-xss-stored-amp-reflected/ referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/btiteam/xbtit-3.1/issues/7 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
-
emaragkos.gr
/infosec-adventures/xbtit-3-1-xss-stored-amp-reflected/
exploit, third-party-advisory
-
github.com
/btiteam/xbtit-3.1/issues/7
exploit, third-party-advisory
-
github.com
/btiteam/xbtit-3.1
third-party-advisory
Sources
- CVE List CVE-2021-45822
- NVD CVE-2021-45822
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