Cyber Resilience

CVE-2023-26478

MediumPublic PoC

Published: 02 March 2023

Published
02 March 2023
Modified
21 November 2024
KEV Added
Patch
CVSS Score v3.1 6.6 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
EPSS Score 0.0462 89.5th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-26478 is a medium-severity Exposed Dangerous Method or Function (CWE-749) vulnerability in Xwiki Xwiki. Its CVSS base score is 6.6 (Medium).

Operationally, ranked in the top 10.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

XWiki Platform is a generic wiki platform. Starting in version 14.3-rc-1, `org.xwiki.store.script.TemporaryAttachmentsScriptService#uploadTemporaryAttachment` returns an instance of `com.xpn.xwiki.doc.XWikiAttachment`. This class is not supported to be exposed to users without the `programing` right. `com.xpn.xwiki.api.Attachment` should be used instead and takes case of…

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checking the user's rights before performing dangerous operations. This has been patched in versions 14.9-rc-1 and 14.4.6. There are no known workarounds for this issue.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

xwiki
xwiki
14.3 — 14.4.6 · 14.5 — 14.9

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.

addresses: CWE-749

Explicitly prohibiting dangerous or unnecessary functions and services prevents exposure of methods that could be directly exploited.

addresses: CWE-749

Minimal functionality removes or avoids exposure of dangerous methods and functions.

References