GHSA-3jp5-3h47-28qf

Source

https://github.com/advisories/GHSA-3jp5-3h47-28qf

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-3jp5-3h47-28qf/GHSA-3jp5-3h47-28qf.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-3jp5-3h47-28qf

Aliases

CVE-2026-77606

Published

2026-09-18T16:40:36Z

Modified

2026-09-18T16:45:09Z

Severity

6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator

Summary

Semantic MediaWiki has reflected XSS in Special:Ask plain table headers

Details

Failure mode

When headers=plain, table header text was emitted into <th> via a raw HTML path. User-controlled mainlabel content could therefore become executable HTML.

Remediation

TableResultPrinter now applies output-context escaping before passing plain headers to the table renderer.
The fix is limited to the HTML/plain-header branch so safe rendering modes are unaffected.

Why this is the right layer

The header value is not a structural token; it is display data. Sanitizing it at the sink is correct because the renderer owns the final HTML emission.

Database specific

{
    "cwe_ids": [
        "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-18T16:40:36Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
}

References

Affected packages

Packagist / mediawiki/semantic-media-wiki

Package

Name: mediawiki/semantic-media-wiki
Purl: pkg:composer/mediawiki/semantic-media-wiki

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

7.2.0

Affected versions

1.*

1.9beta1

1.9-RC1

1.9

1.9.0.1

1.9.0.2

1.9.1

1.9.1.1

1.9.2

2.*

2.0-RC1

2.0-RC2

2.0-RC3

2.0

2.1.0-RC1

2.1.0

2.1.1

2.1.2

2.1.3

2.2.0-RC1

2.2.0

2.2.1

2.2.2

2.2.3

2.3.0-RC1

2.3.0

2.3.1

2.4.0-RC1

2.4.0

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

2.4.6

2.5.0-rc.1

2.5.0

2.5.1

2.5.2

2.5.3

2.5.4

2.5.5

2.5.6

2.5.7

2.5.8

3.*

3.0.0-rc.1

3.0.0-rc.2

3.0.0

3.0.1

3.0.2

3.1.0-rc.1

3.1.0

3.1.1

3.1.2

3.1.3

3.1.4

3.1.5

3.1.6

3.2.0-rc.1

3.2.0-rc.2

3.2.0

3.2.1

3.2.2

3.2.3

4.*

4.0.0

4.0.1

4.0.2

4.1.0

4.1.1

4.1.2

4.1.3

4.2.0

5.*

5.0.0

5.0.1

5.0.2

5.1.0

6.*

6.0.0

6.0.1

7.*

7.0.0

7.1.0

Database specific

last_known_affected_version_range

"<= 7.1.0"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-3jp5-3h47-28qf/GHSA-3jp5-3h47-28qf.json"