GHSA-9xc6-c2rm-f27p

Suggest an improvement
Source
https://github.com/advisories/GHSA-9xc6-c2rm-f27p
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-9xc6-c2rm-f27p/GHSA-9xc6-c2rm-f27p.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-9xc6-c2rm-f27p
Aliases
Published
2025-12-10T15:47:12Z
Modified
2025-12-20T05:42:42.124240Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
XWiki vulnerable to remote code execution through insufficient protection against {{/html}} injection
Details

Impact

Any user who can edit their own user profile or any other document can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The reason is that rendering output is included as content of HTML macros with insufficient escaping, and it is thus possible to close the HTML macro and inject script macros that are executed with programming rights. To demonstrate, the content {{html}}{{/html {{/html}}}} can be inserted into any field of the user profile that supports wiki syntax like the "About" field. If this leads to the display of raw HTML, the instance is vulnerable.

Patches

This problem has been patched by extending the escaping introduced by XRENDERING-693 to also cover closing HTML macros that have spaces after the macro name in XWiki 16.10.10, 17.4.3 and 17.6.0RC1. A similar fix has been applied in org.xwiki.platform:xwiki-platform-oldcore as an extra safety net, see XWIKI-23378. At this point, we're not aware that this extra safety net would be required for security.

The patch also fixes the injection of opening HTML macro syntaxes, e.g., with {{html}}{{html{{/html}}}} which disrupts the rendering of the user profile but for which we haven't found any further security impact apart from the disruption of the UI.

Workarounds

We're not aware of any workarounds except for upgrading the affected module to a version with a fix.

Database specific 
{
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-94",
        "CWE-95"
    ],
    "nvd_published_at": "2025-12-10T22:16:28Z",
    "github_reviewed_at": "2025-12-10T15:47:12Z",
    "severity": "HIGH"
}
References

Affected packages

Maven
org.xwiki.rendering:xwiki-rendering-xml

Package

Name
org.xwiki.rendering:xwiki-rendering-xml
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.rendering/xwiki-rendering-xml

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
16.10.10

Affected versions

5.*
5.0-milestone-1
5.0-milestone-2
5.0-rc-1
5.0
5.0.1
5.0.2
5.0.3
5.1-milestone-1
5.1-milestone-2
5.1-rc-1
5.1
5.2-milestone-1
5.2-milestone-2
5.2-rc-1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.3-milestone-1
5.3-milestone-2
5.3-rc-1
5.3
5.4-milestone-1
5.4-rc-1
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
5.4.7
6.*
6.0-milestone-1
6.0-milestone-2
6.0-rc-1
6.0
6.0.1
6.1-milestone-1
6.1-milestone-2
6.1-rc-1
6.1
6.2-milestone-1
6.2-milestone-2
6.2-rc-1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.7
6.3-milestone-1
6.3-milestone-2
6.3-rc-1
6.3
6.4-milestone-1
6.4-milestone-2
6.4-milestone-3
6.4-rc-1
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.7
6.4.8
7.*
7.0-milestone-1
7.0-milestone-2
7.0-rc-1
7.0
7.0.1
7.1-milestone-1
7.1-milestone-2
7.1-rc-1
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.2-milestone-1
7.2-milestone-2
7.2-milestone-3
7.2-rc-1
7.2
7.3-milestone-1
7.3-rc-1
7.3
7.4-milestone-1
7.4-milestone-2
7.4-rc-1
7.4
7.4.1
7.4.2
7.4.4
7.4.5
7.4.6
8.*
8.0-milestone-1
8.0-milestone-2
8.0-rc-1
8.0
8.1-milestone-1
8.1-milestone-2
8.1-rc-1
8.1
8.2-milestone-1
8.2-milestone-2
8.2-rc-1
8.2
8.2.1
8.2.2
8.3-milestone-2
8.3-rc-1
8.3
8.4-rc-1
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.4.5
8.4.6
9.*
9.0-rc-1
9.0
9.1-rc-1
9.1
9.1.1
9.1.2
9.2-rc-1
9.2
9.3-rc-1
9.3
9.3.1
9.4-rc-1
9.4
9.5-rc-1
9.5
9.5.1
9.6-rc-1
9.6
9.7-rc-1
9.7
9.8-rc-1
9.8
9.8.1
9.9-rc-2
9.9
9.10-rc-1
9.10
9.10.1
9.11-rc-1
9.11
9.11.1
9.11.2
9.11.3
9.11.4
9.11.5
9.11.6
9.11.7
9.11.8
9.11.9
10.*
10.0
10.1-rc-1
10.1
10.2
10.3
10.4-rc-1
10.4
10.5-rc-1
10.5
10.6-rc-1
10.6
10.6.1
10.7-rc-1
10.7
10.7.1
10.8-rc-1
10.8
10.8.1
10.8.2
10.8.3
10.9
10.10-rc-1
10.10
10.11-rc-1
10.11
10.11.1
10.11.2
10.11.3
10.11.4
10.11.5
10.11.6
10.11.7
10.11.8
10.11.9
10.11.10
10.11.11
11.*
11.0
11.0.1
11.0.2
11.0.3
11.1-rc-1
11.1
11.2-rc-1
11.2
11.3-rc-1
11.3
11.3.1
11.3.2
11.3.3
11.3.4
11.3.5
11.3.6
11.3.7
11.4-rc-1
11.4
11.5-rc-1
11.5
11.6-rc-1
11.6
11.6.1
11.7-rc-1
11.7
11.8-rc-1
11.8
11.8.1
11.9
11.10
11.10.1
11.10.2
11.10.3
11.10.4
11.10.5
11.10.6
11.10.7
11.10.8
11.10.10
11.10.11
11.10.12
11.10.13
12.*
12.0-rc-1
12.0
12.1-rc-1
12.1
12.2
12.2.1
12.3-rc-1
12.3
12.4-rc-1
12.4
12.5-rc-1
12.5
12.5.1
12.6
12.6.1
12.6.2
12.6.3
12.6.4
12.6.5
12.6.6
12.6.7
12.6.8
12.7-rc-1
12.7
12.7.1
12.8-rc-1
12.8
12.9-rc-1
12.9
12.10
12.10.1
12.10.2
12.10.3
12.10.4
12.10.5
12.10.6
12.10.7
12.10.8
12.10.9
12.10.10
12.10.11
13.*
13.0
13.1-rc-1
13.1
13.2-rc-1
13.2
13.3-rc-1
13.3
13.4-rc-1
13.4
13.4.1
13.4.2
13.4.3
13.4.4
13.4.5
13.4.6
13.4.7
13.5-rc-1
13.5
13.6-rc-1
13.6
13.7-rc-1
13.7
13.8-rc-1
13.8
13.9-rc-1
13.9
13.10-rc-1
13.10
13.10.1
13.10.2
13.10.3
13.10.4
13.10.5
13.10.6
13.10.7
13.10.8
13.10.9
13.10.10
13.10.11
14.*
14.0-rc-1
14.0
14.1-rc-1
14.1
14.2-rc-1
14.2
14.2.1
14.3-rc-1
14.3
14.3.1
14.4-rc-1
14.4
14.4.1
14.4.2
14.4.3
14.4.4
14.4.5
14.4.6
14.4.7
14.4.8
14.5
14.6-rc-1
14.6
14.7-rc-1
14.7
14.8-rc-1
14.8
14.9-rc-1
14.9
14.10
14.10.1
14.10.2
14.10.3
14.10.4
14.10.5
14.10.6
14.10.7
14.10.8
14.10.9
14.10.10
14.10.11
14.10.12
14.10.13
14.10.14
14.10.15
14.10.16
14.10.17
14.10.18
14.10.19
14.10.20
14.10.21
15.*
15.0-rc-1
15.0
15.1-rc-1
15.1
15.2-rc-1
15.2
15.3-rc-1
15.3
15.4-rc-1
15.4
15.5-rc-1
15.5
15.5.1
15.5.2
15.5.3
15.5.4
15.5.5
15.6-rc-1
15.6
15.7-rc-1
15.7
15.8-rc-1
15.8
15.9-rc-1
15.9
15.10-rc-1
15.10
15.10.1
15.10.2
15.10.3
15.10.4
15.10.5
15.10.6
15.10.7
15.10.8
15.10.9
15.10.10
15.10.11
15.10.12
15.10.13
15.10.14
15.10.15
15.10.16
16.*
16.0.0-rc-1
16.0.0
16.1.0-rc-1
16.1.0
16.2.0-rc-1
16.2.0
16.3.0-rc-1
16.3.0
16.3.1
16.4.0-rc-1
16.4.0
16.4.1
16.4.2
16.4.3
16.4.4
16.4.5
16.4.6
16.4.7
16.4.8
16.5.0-rc-1
16.5.0
16.6.0-rc-1
16.6.0
16.7.0
16.7.1
16.8.0-rc-1
16.8.0
16.9.0-rc-1
16.9.0
16.10.0-rc-1
16.10.0
16.10.1
16.10.2
16.10.3
16.10.4
16.10.5
16.10.6
16.10.7
16.10.8
16.10.9

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-9xc6-c2rm-f27p/GHSA-9xc6-c2rm-f27p.json"
org.xwiki.rendering:xwiki-rendering-xml

Package

Name
org.xwiki.rendering:xwiki-rendering-xml
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.rendering/xwiki-rendering-xml

Affected ranges

Type
ECOSYSTEM
Events
Introduced
17.0.0-rc-1
Fixed
17.4.3

Affected versions

17.*
17.0.0-rc-1
17.0.0
17.1.0-rc-1
17.1.0
17.2.0-rc-1
17.2.0
17.2.1
17.2.2
17.3.0-rc-1
17.3.0
17.4.0-rc-1
17.4.0
17.4.1
17.4.2

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-9xc6-c2rm-f27p/GHSA-9xc6-c2rm-f27p.json"
org.xwiki.rendering:xwiki-rendering-xml

Package

Name
org.xwiki.rendering:xwiki-rendering-xml
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.rendering/xwiki-rendering-xml

Affected ranges

Type
ECOSYSTEM
Events
Introduced
17.5.0-rc-1
Fixed
17.6.0-rc-1

Affected versions

17.*
17.5.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-9xc6-c2rm-f27p/GHSA-9xc6-c2rm-f27p.json"