| Title | gpac v2.4.0 NULL Pointer Dereference |
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| Description | A NULL pointer dereference vulnerability exists in the gf_media_export_webvtt_metadata() function in src/media_tools/media_export.c. When processing a crafted MP4 file containing a track whose handler box (hdlr) has no name field, the handler pointer (nameUTF8) is NULL and is passed directly to gf_fprintf() with the %s format specifier, resulting in undefined behavior. |
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| Source | ⚠️ https://github.com/gpac/gpac/issues/3428 |
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| User | Kery Qi (UID 94424) |
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| Submission | 01/12/2026 13:47 (3 months ago) |
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| Moderation | 01/25/2026 10:53 (13 days later) |
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| Status | Accepted |
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| VulDB entry | 342804 [GPAC up to 2.4.0 media_export.c gf_media_export_webvtt_metadata Name null pointer dereference] |
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| Points | 19 |
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