CVE-2023-29528 | Cross-site Scripting in org.xwiki.commons:xwiki-commons-xml

Exp

XWiki Commons are technical libraries common to several other top level XWiki projects. The "restricted" mode of the HTML cleaner in XWiki, introduced in version 4.2-milestone-1 and massively improved in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid HTML comments. As a consequence, any code relying on this "restricted" mode for security is vulnerable to JavaScript injection ("cross-site scripting"/XSS). When a privileged user with programming rights visits such a comment in XWiki, the malicious JavaScript code is executed in the context of the user session. This allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance. This problem has been patched in XWiki 14.10, HTML comments are now removed in restricted mode and a check has been introduced that ensures that comments don't start with `>`. There are no known workarounds apart from upgrading to a version including the fix.

Published: 2023-04-20 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-29528 is rated High Exploit Risk (80.8/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.16%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2023-29528

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-29528

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 2026-05-02 3.86% 3.16% -0.69%
2 2026-04-22 3.80% 3.86% +0.05%
3 2026-04-21 — 3.80% —

Full EPSS history (29 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-29528

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/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:L)
A normal user session is enough; they don’t have to be admin.
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.
 2.3 6.0 [email protected]
9.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:L/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:L)
A normal user session is enough; they don’t have to be admin.
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.
 2.3 6.0 [email protected]

Weakness enumeration for CVE-2023-29528

GitHub Security Advisory for CVE-2023-29528

GHSA-x37v-36wv-6v6h · Severity: critical · Ecosystem: maven — Cross-site Scripting in org.xwiki.commons:xwiki-commons-xml

Affected software / configurations for CVE-2023-29528

Vendor Product Version Raw CPE
xwiki commons >= 4.3, < 14.10 cpe:2.3:a:xwiki:commons:*:*:*:*:*:*:*:*
xwiki commons 4.2 cpe:2.3:a:xwiki:commons:4.2:-:*:*:*:*:*:*
xwiki commons 4.2 cpe:2.3:a:xwiki:commons:4.2:milestone1:*:*:*:*:*:*
xwiki commons 4.2 cpe:2.3:a:xwiki:commons:4.2:milestone2:*:*:*:*:*:*
xwiki commons 4.2 cpe:2.3:a:xwiki:commons:4.2:milestone3:*:*:*:*:*:*
xwiki commons 4.2 cpe:2.3:a:xwiki:commons:4.2:rc1:*:*:*:*:*:*

References for CVE-2023-29528

cvelogic Threat Intelligence