SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-4521

The Import XML and RSS Feeds WordPress plugin before 2.1.5 contains a web shell, allowing unauthenticated attackers to perform RCE.

CRITICAL 9.8EPSS 40.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 40.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

The Import XML and RSS Feeds WordPress plugin before 2.1.5 contains a web shell, allowing unauthenticated attackers to perform RCE. The plugin/vendor was not compromised and the files are the result of running a PoC for a previously reported issue (https://wpscan.com/vulnerability/d4220025-2272-4d5f-9703-4b2ac4a51c42) and not deleting the created files when releasing the new version.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
40.83% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
mooveagency/import xml and rss feeds
Source
contact@wpscan.com
EPSS trend
0%23%45%3 November 2026: 40.83%3 November 20263 November 2026

EPSS 40.8% since 3 November 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.

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