{"id":"CVE-2026-124030","state":"PUBLISHED","title":"GPAC through 26.07.0 Type Confusion via gf_sg_command_apply XMT Field-Replace","description":"GPAC through 26.07.0 contains a type confusion vulnerability in gf_sg_command_apply() in src/scenegraph/commands.c that fails to verify BIFS field-replace command types match target node fields. Attackers can supply a crafted XMT file opened with MP4Box, such as via chapter import, causing gf_sg_vrml_field_clone() to memcpy from invalid pointers and crash.","publishedAt":"2026-11-06T19:14:46.903Z","updatedAt":"2026-11-06T19:14:46.903Z","severity":{"score":6.8,"label":"Medium","version":"4.0","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","source":"VulnCheck"},"assigner":"VulnCheck","products":["gpac gpac"],"affected":[{"vendor":"gpac","product":"gpac","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"26.07.0","versionType":"custom"}]}],"references":["https://github.com/gpac/gpac/issues/4032","https://github.com/gpac/gpac","https://github.com/gpac/gpac/commit/1359c4da9329cedceeb8fcfeab6d97e0927236e1","https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/224/224_gf_sg_command_apply_scenegraph_commands_c_346.xmt","https://github.com/gpac/gpac/blob/v26.07.0/src/scenegraph/commands.c#L321","https://www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-gf-sg-command-apply-xmt-field-replace"],"weaknesses":["CWE-843"],"ingestedAt":"2026-11-06T19:20:06.668Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/124xxx/CVE-2026-124030.json","commit":"64a2fc3fb51a0d352ce39f4daed428c7f43508b1","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-124030","state":"PUBLISHED","datePublished":"2026-11-06T19:14:46.903Z","dateUpdated":"2026-11-06T19:14:46.903Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-11-06T18:53:06.106Z"},"containers":{"cna":{"title":"GPAC through 26.07.0 Type Confusion via gf_sg_command_apply XMT Field-Replace","descriptions":[{"lang":"en","value":"GPAC through 26.07.0 contains a type confusion vulnerability in gf_sg_command_apply() in src/scenegraph/commands.c that fails to verify BIFS field-replace command types match target node fields. Attackers can supply a crafted XMT file opened with MP4Box, such as via chapter import, causing gf_sg_vrml_field_clone() to memcpy from invalid pointers and crash."}],"affected":[{"vendor":"gpac","product":"gpac","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"26.07.0","versionType":"custom"}]}],"references":[{"url":"https://github.com/gpac/gpac/issues/4032","tags":["issue-tracking"],"name":"GitHub Issue #4032"},{"url":"https://github.com/gpac/gpac","tags":["product"]},{"url":"https://github.com/gpac/gpac/commit/1359c4da9329cedceeb8fcfeab6d97e0927236e1","tags":["patch"]},{"url":"https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/224/224_gf_sg_command_apply_scenegraph_commands_c_346.xmt","tags":["exploit"]},{"url":"https://github.com/gpac/gpac/blob/v26.07.0/src/scenegraph/commands.c#L321","tags":["technical-description"]},{"url":"https://www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-gf-sg-command-apply-xmt-field-replace","name":"VulnCheck Advisory: GPAC through 26.07.0 Type Confusion via gf_sg_command_apply XMT Field-Replace","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-843","lang":"en","description":"Access of Resource Using Incompatible Type ('Type Confusion')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-11-06T19:14:46.903Z"},"datePublic":"2026-10-29T00:00:00.000Z","cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*","versionEndIncluding":"26.07.0"}]}]}],"credits":[{"lang":"en","value":"Alexander A. Shvedov (sigdevel)","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}