CVE-2021-42558 json
An issue was discovered in CALDERA 2.8.1.
published 2022-01-12 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29526
- 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 65%
- public exploits
- 0
- none known
Summary
An issue was discovered in CALDERA 2.8.1. It contains multiple reflected, stored, and self XSS vulnerabilities that may be exploited by authenticated and unauthenticated attackers.
Exploit prediction
1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42558-Multiple%20XSS-MITRE%20Caldera 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
-
github.com
/DrunkenShells/Disclosures/tree/master/CVE-2021-42558-Multiple%20XSS-MITRE%20Caldera
exploit, third-party-advisory
-
github.com
/mitre/caldera/releases
release-notes
Sources
- CVE List CVE-2021-42558
- NVD CVE-2021-42558
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.