What is CVE-2021-24491?

CVE-2021-24491 is a high-severity vulnerability in Fileviewer Project, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-09-13.

How severe is CVE-2021-24491?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-24491 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Fileviewer Project

CVE-2021-24491

The Fileviewer WordPress plugin through 2.2 does not have CSRF checks in place when performing actions such as upload and delete files. As a result, attackers could make a logged in administrator delete and upload arbitrary files via a CSRF attack

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2021-09-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.1th percentile), scored 2026-10-07.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Fileviewer Project
Fileviewer — versions 2.2

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

Public proof-of-concept exploits

References

wpscan.com/vulnerability/ddd37827-f4c1-4806-8846-d06d9fbf23dd (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-24491?: CVE-2021-24491 is a high-severity vulnerability in Fileviewer Project, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-09-13.
How severe is CVE-2021-24491?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-24491 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.