CVE-2023-35159 | XWiki Platform vulnerable to reflected cross-site scripting via xredirect parameter in deletespace template

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS). It's possible to exploit the deletespace template to perform a XSS, e.g. by using URL such as: > xwiki/bin/deletespace/Sandbox/?xredirect=javascript:alert(document.domain). This vulnerability exists since XWiki 3.4-milestone-1. The vulnerability has been patched in XWiki 14.10.5 and 15.1-rc-1.

Published: 2023-06-23 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-35159 is rated High Risk (66.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.18%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-35159

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-23 1.97% 2.18% +0.21%
2 2026-06-15 4.28% 1.97% -2.31%
3 2026-05-21 — 4.28% —

Full EPSS history (26 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-35159

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.6 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 6.0 [email protected]
6.1 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.7 [email protected]

Weakness enumeration for CVE-2023-35159

GitHub Security Advisory for CVE-2023-35159

GHSA-x234-mg7q-m8g8 · Severity: critical · Ecosystem: maven — XWiki Platform vulnerable to reflected cross-site scripting via xredirect parameter in deletespace template

Affected software / configurations for CVE-2023-35159

Vendor Product Version Raw CPE
xwiki xwiki >= 3.5, < 14.10.5 cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*
xwiki xwiki 3.4 cpe:2.3:a:xwiki:xwiki:3.4:milestone-1:*:*:*:*:*:*
xwiki xwiki 3.5 cpe:2.3:a:xwiki:xwiki:3.5:rc-1:*:*:*:*:*:*
xwiki xwiki 15.0 cpe:2.3:a:xwiki:xwiki:15.0:*:*:*:*:*:*:*

References for CVE-2023-35159

cvelogic Threat Intelligence