SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2024-21650

XWiki is vulnerable to a remote code execution (RCE) attack through its user registration feature.

CRITICAL 9.8EPSS 93.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 93.5%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. XWiki is vulnerable to a remote code execution (RCE) attack through its user registration feature. This issue allows an attacker to execute arbitrary code by crafting malicious payloads in the "first name" or "last name" fields during user registration. This impacts all installations that have user registration enabled for guests. This vulnerability has been patched in XWiki 14.10.17, 15.5.3 and 15.8 RC1.

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
93.48% probability · 100th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-95, CWE-94
Affected
xwiki/xwiki
Source
security-advisories@github.com
EPSS trend
0%48%95%3 November 2026: 93.48%3 November 20263 November 2026

EPSS 93.5% 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.