Cyber Resilience

CVE-2023-26472

Xwiki 6.2.1 – 13.10.10

Public PoC
Published
02 March 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 9.9
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.011 63th percentile
Risk Priority 77 floored blend · peak EPSS

Summary

CVE-2023-26472 is a critical-severity Improper Encoding or Escaping of Output (CWE-116) vulnerability in Xwiki Xwiki. Its CVSS base score is 9.9 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Content Injection (T1659); ranked in the top 37% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

XWiki Platform contains an improper output encoding flaw that permits execution of arbitrary wiki content under the privileges of the IconThemeSheet author. The issue affects all versions beginning with 6.2-milestone-1 and is triggered when an attacker creates a specially crafted icon theme, either by editing a new page or by modifying the user profile even when the account lacks general edit rights.

An authenticated attacker with low privileges can therefore obtain full read, write, and administrative control over wiki content, achieving a CVSS 9.9 impact that crosses security boundaries. The attack requires no user interaction and can be performed remotely over the network.

The GitHub Security Advisory and XWiki Jira entry recommend immediate upgrade to versions 14.9, 14.4.6, or 13.10.10. As a workaround, administrators can apply the patch from commit 48caf7491595238af2b531026a614221d5d61f38 directly to the IconThemesCode.IconThemeSheet page.

EPSS remains flat at 0.1031 with no material increase after disclosure.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

XWiki Platform is a generic wiki platform. Starting in version 6.2-milestone-1, one can execute any wiki content with the right of IconThemeSheet author by creating an icon theme with certain content. This can be done by creating a new page…

more

or even through the user profile for users not having edit right. The issue has been patched in XWiki 14.9, 14.4.6, and 13.10.10. An available workaround is to fix the bug in the page `IconThemesCode.IconThemeSheet` by applying a modification from commit 48caf7491595238af2b531026a614221d5d61f38.

CWE(s)
CWE-116

Related Threats

MITRE ATT&CK Enterprise Techniques

T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-55663Same product: Xwiki Xwiki
CVE-2023-45135Same product: Xwiki Xwiki
CVE-2023-32071Same product: Xwiki Xwiki
CVE-2025-32974Same product: Xwiki Xwiki
CVE-2022-36099Same product: Xwiki Xwiki
CVE-2022-36100Same product: Xwiki Xwiki
CVE-2023-36469Same product: Xwiki Xwiki
CVE-2023-29527Same product: Xwiki Xwiki
CVE-2023-29526Same product: Xwiki Xwiki
CVE-2023-29519Same product: Xwiki Xwiki

Affected Assets

xwiki
xwiki
6.2 · 6.2.1 — 13.10.10 · 14.0 — 14.4.6 · 14.5 — 14.9

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.1.2
  • V1.2.1
  • V1.2.3

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.

SI-15 Information Output Filtering
addresses: CWE-116

Validating that output matches expected content directly mitigates failures to properly encode or escape data for its destination context.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require proper output encoding to prevent injection and message malformation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
prevents

Secure coding standards explicitly require correct output encoding and escaping to preserve message structure.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect missing or incorrect encoding but does not itself implement the control.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates output encoding/escaping practices that directly prevent improper encoding.

A.8.26 Application security requirements partial match
prevents

Application security requirements include explicit rules for safe output handling and encoding.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the likelihood of missing encoding but do not prescribe the actual technique.

References