XSS in Tammersoft Shared Files
CVE-2021-24856
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
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000
Affected products
- Tammersoft Shared Files
- Shared Files – Easy Download Manager And File Sharing Plugin With Frontend Upload — versions 1.6.61
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wpscan.com/vulnerability/8fd483fb-d399-4b4f-b4ef-bbfad1b5cf1b (Exploit, Third Party Advisory)
- mikadmin.fr/tech/XSS-Stored-Shared-Files-a837703ad010d111be11ffdf478aa6114F0lK6… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-24856?
- CVE-2021-24856 is a medium-severity vulnerability in Tammersoft Shared Files, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-11-17.
- How severe is CVE-2021-24856?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2021-24856 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.