GHSA-hw3m-8j5x-94ff

Suggest an improvement
Source
https://github.com/advisories/GHSA-hw3m-8j5x-94ff
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-hw3m-8j5x-94ff/GHSA-hw3m-8j5x-94ff.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-hw3m-8j5x-94ff
Aliases
Published
2026-09-18T16:51:25Z
Modified
2026-09-18T17:00:04Z
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 an open redirect in Special:URIResolver
Details

Failure mode

Special:URIResolver resolves its user-controlled subpage to a MediaWiki title and issues an HTTP 303 redirect to $title->getFullURL() without validating the resolved target. A crafted subpage can make that target point off-host: an interwiki prefix redirects to the foreign wiki (for example Special:URIResolver/mw-3AFoo, which decodes to mw:Foo, redirects to https://www.mediawiki.org/wiki/Foo), and where the resolved URL carries an authority the target can even embed user:pass@host credentials. The result is an open redirect to an attacker-influenced host, usable for phishing from a trusted wiki URL.

Remediation

  • The resolved target URL is parsed and compared against the current host at the redirect sink.
  • The redirect is rejected (bad-title error page) when a user or pass component is present, or when the host does not match the current host.

Maintenance note

Redirect code must validate the final target URL, not just the input path. Host comparison belongs at the redirect sink: each sink (special page, entry point) must validate its own target rather than relying on upstream normalisation.

Database specific 
{
    "cwe_ids": [
        "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-18T16:51:25Z",
    "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-hw3m-8j5x-94ff/GHSA-hw3m-8j5x-94ff.json"