CVE-2021-41918 json
webTareas version 2.4 and earlier allows an authenticated user to inject arbitrary web script or HTML due to incorrect sanitization of user…
published 2021-10-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28916
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
webTareas version 2.4 and earlier allows an authenticated user to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data and achieve a Reflected Cross-Site Scripting attack against the platform users and administrators. The issue affects every endpoint on the application because it is related on how each URL is echoed back on every response page.
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- n4nj0.github.io https://n4nj0.github.io/advisories/webtareas-multiple-vulnerabilities-i/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| 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 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
n4nj0.github.io
/advisories/webtareas-multiple-vulnerabilities-i/
exploit, third-party-advisory
Sources
- CVE List CVE-2021-41918
- NVD CVE-2021-41918
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.