CVE-2021-3857 json
Cross-site Scripting (XSS) - Stored in chaskiq/chaskiq
published 2022-01-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27096
- cvss
- 7.3
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
chaskiq is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Patch / fix
Exploit prediction
0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/18f7eaee-6309-40cb-aed3-d5ac0af03cf3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.3 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- chaskiq chaskiq/chaskiq
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/chaskiq/chaskiq/commit/bffa585862b11cc05229ab3ed621d68f70ed33d0
patch, third-party-advisory
-
huntr.dev
/bounties/18f7eaee-6309-40cb-aed3-d5ac0af03cf3
exploit, third-party-advisory
Sources
- CVE List CVE-2021-3857
- NVD CVE-2021-3857
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.