CVE-2023-46732
Published: 06 November 2023
Summary
CVE-2023-46732 is a critical-severity Cross-site Scripting (CWE-79) vulnerability in Xwiki Xwiki. Its CVSS base score is 9.6 (Critical).
Operationally, ranked in the top 2.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
XWiki Platform is affected by a reflected cross-site scripting vulnerability (CWE-79) in which the rev parameter is rendered unescaped inside the content menu. The flaw exists in all versions prior to the listed fixes and carries a CVSS 3.1 score of 9.6, reflecting network attack vector, low complexity, and full impact on confidentiality, integrity, and availability when chained to privileged actions.
An unauthenticated attacker who can lure an authenticated user into following a crafted URL can execute arbitrary JavaScript in the victim’s browser context. When the victim holds programming rights, this immediately permits remote Groovy code execution, allowing complete compromise of the XWiki instance.
Official advisories and the referenced GitHub security advisory GHSA-j9rc-w3wv-fv62 state that the issue is resolved in XWiki 15.6 RC1, 15.5.1, and 14.10.14. The correcting commit 04e325d57 can be applied manually without an instance restart, and no workarounds are documented.
EPSS reached a peak of 0.5556 after disclosure before receding to its current value of 0.4811, indicating sustained although not sharply escalating exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-2985
Vulnerability details
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. XWiki is vulnerable to reflected cross-site scripting (RXSS) via the `rev` parameter that is used in the content of the content menu without…
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escaping. If an attacker can convince a user to visit a link with a crafted parameter, this allows the attacker to execute arbitrary actions in the name of the user, including remote code (Groovy) execution in the case of a user with programming right, compromising the confidentiality, integrity and availability of the whole XWiki installation. This has been patched in XWiki 15.6 RC1, 15.5.1 and 14.10.14. The patch in commit `04e325d57` can be manually applied without upgrading (or restarting) the instance. Users are advised to upgrade or to manually apply the patch. There are no known workarounds for this vulnerability.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.