Skip to content
Fencer Vulns
medium 4.8

CVE-2021-24856 json

Shared Files < 1.6.61 - Admin+ Stored Cross-Site Scripting

published 2021-11-17 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11768

cvss
4.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

The Shared Files WordPress plugin before 1.6.61 does not sanitise and escape the Download Counter Text settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Patch / fix

  • tammersoft shared_files 1.6.61

Exploit prediction

0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • wpscan.com https://wpscan.com/vulnerability/8fd483fb-d399-4b4f-b4ef-bbfad1b5cf1b referenced PoC, tagged "exploit" by a source, unverified
  • mikadmin.fr https://mikadmin.fr/tech/XSS-Stored-Shared-Files-a837703ad010d111be11ffdf478aa6114F0lK656bV.pdf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/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

  • Unknown Shared Files – Easy Download Manager and File Sharing Plugin with Frontend File Upload

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

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.