Bug 2560925 (CVE-2026-116612)

Summary: CVE-2026-116612 gst-editing-services: gst-editing-services: arbitrary GStreamer element instantiation via untrusted project file effect bin-description
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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A flaw was found in GStreamer Editing Services (gst-editing-services). A GES project file can embed an arbitrary GStreamer pipeline description as an effect definition. When such a file is loaded, either explicitly by an editing application or automatically by a media player or file-manager thumbnailing service that uses GStreamer autoplugging, the pipeline description is parsed and instantiated without restriction on which elements may be used or which properties may be set. A remote attacker who can deliver a crafted project file to a victim's system can trigger reading or writing of arbitrary local files, issue outbound network requests to attacker-controlled servers, or cause the application to crash. Under certain conditions the file-write capability may be leveraged to achieve code execution.
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Bug Depends On: 2560938    
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Description OSIDB Bzimport 2026-10-26 16:30:59 UTC 
GStreamer Editing Services (gst-editing-services, libges) before 1.28.8 does not apply any restriction on the GStreamer pipeline description (bin-description) embedded in effect assets inside a .xges or .xptv project file. When a project is loaded via the XML formatter (ges-base-xml-formatter.c) or the Pitivi formatter (ges-pitivi-formatter.c), the asset-id field of each effect element is passed without sanitisation to ges_effect_from_description() and ges_effect_asset_id_get_type_and_bindesc() in ges/ges-effect-asset.c (lines ~300-415 in the vulnerable version). Both functions call gst_parse_bin_from_description_full() / gst_parse_bin_from_description() directly on the untrusted string, allowing instantiation of any registered GStreamer element factory. Properties on those elements (e.g. filesrc::location, souphttpsrc::location, filesink::location) can additionally be set by the project's children-properties XML attribute, which is applied verbatim via _set_child_property() (ges-base-xml-formatter.c ~line 550-571) through g_object_set_property() without any property denylist. The attack surface is greatly widened by the gesdemux GStreamer plugin (plugins/ges/gesplugin.c:42), registered at GST_RANK_PRIMARY. Advisory GStreamer-SA-2026-0090 (2026-10-08). Fix: gst-editing-services 1.28.8, MR !12647. Reporter: Sebastian Dröge (Centricular).