Description
QGIS is a free, open source, cross-platform geographic information system. Prior to 3.44.12 and 4.0.0 through 4.2.3, QGIS Server renders feature data in WFS3 (OGC API Features) HTML responses without HTML escaping. Attacker-controlled feature.properties values from a published writable vector layer reach resources/server/api/ogc/templates/wfs3/getFeatures.html through QgsServerOgcApiHandler::htmlDump and the if_nullptr_null_str callback. A user who opens an items HTML page can execute stored markup or script in the QGIS Server origin, which can expose the viewer's session data or issue authenticated requests with the viewer's privileges. This issue is fixed in version 3.44.12.
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Remediation
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Tracking
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Advisories
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References
History
Mon, 12 Oct 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | QGIS is a free, open source, cross-platform geographic information system. Prior to 3.44.12 and 4.0.0 through 4.2.3, QGIS Server renders feature data in WFS3 (OGC API Features) HTML responses without HTML escaping. Attacker-controlled feature.properties values from a published writable vector layer reach resources/server/api/ogc/templates/wfs3/getFeatures.html through QgsServerOgcApiHandler::htmlDump and the if_nullptr_null_str callback. A user who opens an items HTML page can execute stored markup or script in the QGIS Server origin, which can expose the viewer's session data or issue authenticated requests with the viewer's privileges. This issue is fixed in version 3.44.12. | |
| Title | QGIS: Stored XSS in WFS3 getFeatures HTML page via unescaped feature attribute values | |
| Weaknesses | CWE-79 | |
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| Metrics |
cvssV3_1
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Subscriptions
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-12T21:53:29.041Z
Reserved: 2026-10-01T18:47:30.995Z
Link: CVE-2026-104140
No data.
Status : Received
Published: 2026-10-12T22:17:03.273
Modified: 2026-10-12T22:17:03.273
Link: CVE-2026-104140
No data.
OpenCVE Enrichment
No data.
Weaknesses
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CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')