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CVE-2026-104140 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/qgis/QGIS/security/advisories/GHSA-cr49-pm9v-m788	CISA-ADP
https://github.com/qgis/QGIS/commit/1930e81c918818a4f5412219f8f7e470d2709f91	[email protected]
https://github.com/qgis/QGIS/commit/ca76fcac616dbf1c0446514fd6517296eb7c6904	[email protected]
https://github.com/qgis/QGIS/pull/66616	[email protected]
https://github.com/qgis/QGIS/pull/67044	[email protected]
https://github.com/qgis/QGIS/releases/tag/final-3_44_12	[email protected]
https://github.com/qgis/QGIS/security/advisories/GHSA-cr49-pm9v-m788	[email protected]

see all 7 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 13, 2026	CVE Modified	CISA-ADP
Oct 12, 2026	New CVE Received	[email protected]