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NVD / CVE Program· CNA GitHub_M

CVE-2023-37908: org.xwiki.rendering:xwiki-rendering-xml Improper Neutralization of Invalid Characters in Identifiers in Web Pages vulnerability

Noroxi assessment

Priority: Monitor (action score 38/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 66.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: org.xwiki.platform:xwiki-platform-annotation-core (Maven) 14.6-rc-1; org.xwiki.rendering:xwiki-rendering-syntax-annotatedhtml5 (Maven) 14.6-rc-1; org.xwiki.rendering:xwiki-rendering-syntax-annotatedxhtml (Maven) 14.6-rc-1.

Low priority for now. Upgrade to org.xwiki.platform:xwiki-platform-annotation-core (Maven) 14.6-rc-1; org.xwiki.rendering:xwiki-rendering-syntax-annotatedhtml5 (Maven) 14.6-rc-1; org.xwiki.rendering:xwiki-rendering-syntax-annotatedxhtml (Maven) 14.6-rc-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

XWiki Rendering is a generic Rendering system that converts textual input in a given syntax into another syntax. The cleaning of attributes during XHTML rendering, introduced in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid attribute names. This can be exploited, e.g., via the link syntax in any content that supports XWiki syntax like comments in XWiki. When a user moves the mouse over a malicious link, the malicious JavaScript code is executed in the context of the user session. When this user is a privileged user who has programming rights, this allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance. While this attribute was correctly recognized as not allowed, the attribute was still printed with a prefix `data-xwiki-translated-attribute-` without further cleaning or validation. This problem has been patched in XWiki 14.10.4 and 15.0 RC1 by removing characters not allowed in data attributes and then validating the cleaned attribute again. There are no known workarounds apart from upgrading to a version including the fix.

CriticalCVSS 9.6 · v3.1—Proof of concept Fix available
Published
Oct 25, 2023
Updated
Jun 17, 2026
EPSS
1.1% · 66th percentile

Report tools

JSON

Action score

38

Monitor

Low priority for now.

CVSS
38 / 40 · 9.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
9.6
CNA · GitHub_M
9.1
0.5 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-37908

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
xwikixwiki-rendering

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • xwiki xwiki-rendering14.6 and later · before 14.10.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • xwiki xwiki-rendering

    • >= 14.6-rc-1, < 14.10.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenorg.xwiki.platform:xwiki-core-rendering-apiup to and including 3.0-milestone-2—
Mavenorg.xwiki.platform:xwiki-platform-annotation-corebefore 14.6-rc-114.6-rc-1
Mavenorg.xwiki.rendering:xwiki-rendering-syntax-annotatedhtml5before 14.6-rc-114.6-rc-1
Mavenorg.xwiki.rendering:xwiki-rendering-syntax-annotatedxhtmlbefore 14.6-rc-114.6-rc-1
Mavenorg.xwiki.rendering:xwiki-rendering-syntax-htmlbefore 14.6-rc-114.6-rc-1
Mavenorg.xwiki.rendering:xwiki-rendering-syntax-html5before 14.6-rc-114.6-rc-1
Mavenorg.xwiki.rendering:xwiki-rendering-syntax-xhtmlbefore 14.6-rc-114.6-rc-1
Mavenorg.xwiki.rendering:xwiki-rendering-xmlfrom 14.6-rc-1 · before 14.10.414.10.4

Same product

xwiki: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-53837org.xwiki.rendering:xwiki-rendering-xml has an Eval Injection issue
    39Monitor
  • CVE-2023-37912XWiki Rendering's footnote macro vulnerable to privilege escalation via the footnote macro
    35Monitor
  • CVE-2025-66474XWiki vulnerable to remote code execution through insufficient protection against {{/html}} injection
    34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:org.xwiki.platform:xwiki-platform-annotation-core14.6-rc-1Package registry (OSV)
Maven:org.xwiki.rendering:xwiki-rendering-syntax-annotatedhtml514.6-rc-1Package registry (OSV)
Maven:org.xwiki.rendering:xwiki-rendering-syntax-annotatedxhtml14.6-rc-1Package registry (OSV)
Maven:org.xwiki.rendering:xwiki-rendering-syntax-html14.6-rc-1Package registry (OSV)
Maven:org.xwiki.rendering:xwiki-rendering-syntax-html514.6-rc-1Package registry (OSV)
Maven:org.xwiki.rendering:xwiki-rendering-syntax-xhtml14.6-rc-1Package registry (OSV)
Maven:org.xwiki.rendering:xwiki-rendering-xml14.10.4Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02025-08-16

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+660 d
  3. TodayNov 9, 2026+1111 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-83 · Improper Neutralization of Script in Attributes in a Web Page

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records