{"affected":[{"defaultStatus":"unaffected","product":"gpac","source":"CNA: VulnCheck","vendor":"gpac","versions":[{"lessThanOrEqual":"26.07.0","status":"affected","version":"0","versionType":"custom"}]}],"cveId":"CVE-2026-124031","cwes":["CWE-843"],"description":"GPAC through 26.07.0 contains a type confusion vulnerability in drawable_get_aspect_2d_mpeg4() and TraverseShape() that casts a Shape's appearance node to M_Appearance without checking its node tag. Attackers can supply a crafted XMT file placing another node type, such as Conditional, in the appearance field to trigger an invalid memory read and crash MP4Box.","epss":{"date":"2026-11-09","percentile":0.01939,"score":0.00121},"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/222/222_gf_node_get_tag_compositor_texturing_c_370.xmt"}],"kev":null,"metrics":[{"score":6.8,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},{"score":6.8,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":5.5,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1794266238140,"publishedAt":1793992487578,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/gpac/gpac/issues/4030"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/gpac/gpac"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/gpac/gpac/commit/43a8329a90ae2907716b593cc3746458516c7c39"},{"source":"CNA: VulnCheck","tags":["exploit"],"url":"https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/222/222_gf_node_get_tag_compositor_texturing_c_370.xmt"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/gpac/gpac/blob/v26.07.0/src/compositor/drawable.c#L564-L565"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-drawable-get-aspect-2d-mpeg4"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/gpac/gpac"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/gpac/gpac/blob/v26.07.0/src/compositor/drawable.c#L564-L565"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/gpac/gpac/commit/43a8329a90ae2907716b593cc3746458516c7c39"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/gpac/gpac/issues/4030"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/222/222_gf_node_get_tag_compositor_texturing_c_370.xmt"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-drawable-get-aspect-2d-mpeg4"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/gpac/gpac/commit/43a8329a90ae2907716b593cc3746458516c7c39"}],"revision":"53e9dd421dc8d6d1acffc50e708576e3cde4253a0daf527be82ccf6598817bf9","sources":[{"modifiedAt":1794264230279,"name":"CNA: VulnCheck","retrievedAt":1794265774456,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124031"},{"modifiedAt":1794266238140,"name":"NVD","retrievedAt":1794269919055,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124031"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794265794946,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-124031"}],"ssvc":{"assessedAt":1794263906658,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"GPAC through 26.07.0 Type Confusion via drawable_get_aspect_2d_mpeg4","updatedAt":1794269919055}