CVE-2023-31126
CRITICALDescription
`org.xwiki.commons:xwiki-commons-xml` is an XML library used by the open-source wiki platform XWiki. The HTML sanitizer, introduced in version 14.6-rc-1, allows the injection of arbitrary HTML code and thus cross-site scripting via invalid data attributes. This vulnerability does not affect restricted cleaning in HTMLCleaner as there attributes are cleaned and thus characters like `/` and `>` are removed in all attribute names. This problem has been patched in XWiki 14.10.4 and 15.0 RC1 by making sure that data attributes only contain allowed characters. There are no known workarounds apart from upgrading to a version including the fix.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 54% of all known CVEs.
References
Related Vulnerabilities
Other CWE-86 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2026-28417 | Medium | 4.4 | 1.2% | - | Fix |
| CVE-2023-22840 | Low | 3.3 | 0.4% | - | Fix |
| CVE-2024-10941 | Medium | 6.5 | 0.4% | - | Fix |
| CVE-2025-20166 | Medium | 5.4 | 0.4% | - | Fix |
| CVE-2024-21864 | High | 7.8 | 0.3% | - | - |
| CVE-2025-20168 | Medium | 5.4 | 0.3% | - | Fix |
Common questions
How do I fix CVE-2023-31126?
Upgrade xwiki to 14.10.4 or later.
Is CVE-2023-31126 being actively exploited?
Not that we know of. CVE-2023-31126 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.82% is the estimated probability that it will be exploited in the next 30 days. That is higher than 54% of all scored CVEs.
How severe is CVE-2023-31126?
CVE-2023-31126 has a CVSS v3 base score of 9.0, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2023-31126 affect?
Published advisories record a fix for xwiki (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-28.