SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-24563

The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone…

EXPLOITMEDIUM 6.1EPSS 26.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 26.3%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly

CVSS 3.1
6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
26.27% probability · 98th percentile
Public exploits
1 in Exploit-DB · first 12 January 2022
CISA KEV
Not listed
Weakness
CWE-79
Affected
frontend uploader project/frontend uploader
Source
contact@wpscan.com
EPSS trend
0%15%30%26 October 2026: 26.27%26 October 202626 October 2026

EPSS 26.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-50655source ↗WordPress Plugin Frontend Uploader 1.3.2 - Stored Cross Site Scripting (XSS) (Unauthenticated)php · Veshraj Ghimirewebapps12 January 2022no

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.