4.8

CVE-2021-24856: tammersoft shared_files Cross-site Scripting

CVSS: 4.8v3.1MediumModified
Published 17-11-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-24856 is a medium (CVSS 4.8) Cross-site Scripting vulnerability in tammersoft shared_files. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.2% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (NVD)
EPSS score
0.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 17-11-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

0.00 pp

From 0.67% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (mikadmin.fr)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Tammersoft1 product
Unknown1 product
Wordpress1 product
  • shared-files< 1.6.61

3 vendors · 3 products

References

3 links