CVE-2021-45919 json
Studio 42 elFinder allows stored XSS
published 2022-02-08 4 y ago modified 2026-06-17 4 mo ago also GHSA-c3j8-q5x6-2855 , EUVD-2022-0949
- 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 50%
- public exploits
- 0
- none known
Summary
Studio 42 elFinder through 2.1.31 allows XSS via an SVG document.
Exploit prediction
0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- trustwave.com https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/from-stored-xss-to-rce-using-beef-and-elfinder-cve-2021-45919/ 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 |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | studio-42/elfinder | <=2.1.31 |
no fix listed |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
trustwave.com
/en-us/resources/blogs/spiderlabs-blog/from-stored-xss-to-rce-using-beef-and-elfinder-cve-2021-45919/
exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-45919
advisory
-
trustwave.com
/en-us/resources/blogs/spiderlabs-blog/from-stored-xss-to-rce-using-beef-and-elfinder-cve-2021-45919
web
Sources
- CVE List CVE-2021-45919
- GitHub Advisory GHSA-c3j8-q5x6-2855
- NVD CVE-2021-45919
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.