{"id":"CVE-2026-112019","kind":"vulnerability","aliases":["CVE-2026-112019"],"related":[],"title":"cgltf: crafted glTF file reads adjacent heap memory during parsing","description":"cgltf through 1.15 contains a heap out-of-bounds read vulnerability in cgltf_accessor_unpack_floats() that advances the sparse values cursor by the base bufferView byteStride. Attackers can supply a crafted glTF or GLB file that passes cgltf_validate() to read adjacent heap memory into vertex data or crash applications.","summary":"cgltf, a single-header C library for loading glTF and GLB 3D models, has a heap out-of-bounds read in cgltf_accessor_unpack_floats() when sparse accessor values are advanced by the base bufferView stride. A crafted file that passes cgltf_validate() can leak adjacent heap memory into vertex data or crash the application.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["3d-graphics","c","game-engines","gltf","package"],"not_affected_if":["trusted-assets-only"],"how_to_check":"- Check whether the project vendors or links cgltf, for example with `grep -ri cgltf` over the source tree or the lockfile.\n- Confirm the version in use; the sources say flaws exist through `1.15`, and no fixed version is named.","fix":null,"status":"open","published_at":"2026-10-18T12:17:14+00:00","first_seen_at":"2026-10-23T21:57:15+00:00","triaged_at":"2026-10-25T03:41:01+00:00","updated_at":"2026-10-25T03:41:01+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T03:41:01Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"unknown","title":"cgltf: crafted glTF file reads adjacent heap memory during parsing","impact":"medium","summary":"cgltf, a single-header C library for loading glTF and GLB 3D models, has a heap out-of-bounds read in cgltf_accessor_unpack_floats() when sparse accessor values are advanced by the base bufferView stride. A crafted file that passes cgltf_validate() can leak adjacent heap memory into vertex data or crash the application.","category":"package","nicknames":[],"who_cares":["c","3d-graphics","gltf","game-engines"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Adjacent heap memory leaks into vertex data or the application crashes.","analyst_note":"Find the fixed cgltf release and any patch commit at the upstream project and the NVD entry, since no fix version is given in the sources.","how_to_check":"- Check whether the project vendors or links cgltf, for example with `grep -ri cgltf` over the source tree or the lockfile.\n- Confirm the version in use; the sources say flaws exist through `1.15`, and no fixed version is named.","needs_analyst":true,"not_affected_if":["trusted-assets-only"],"who_is_affected":"Applications that load untrusted glTF or GLB files with cgltf, such as viewers, asset pipelines or upload previews that parse models from users or the internet. Apps that only load their own trusted assets are less exposed. The sources do not name a patched version.","user_interaction":"unknown","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000615,"input_tokens":3348,"output_tokens":561,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-112019':13A,16A '-2026':12A,15A '1.15':85C '3d':18B,38B '3d-graphics':17B 'accessor':50B,55B,97C 'adjac':6A,73B,126C 'advanc':58B,101C 'applic':82B,134C 'attack':111C 'base':61B,108C 'bound':46B,92C 'bufferview':62B,109C 'bytestrid':110C 'c':20B,31B 'cgltf':1A,26B,49B,69B,83C,96C,122C 'contain':86C 'craft':2A,65B,115C 'crash':80B,133C 'cursor':105C 'cve':11A,14A 'data':78B,131C 'engin':23B 'file':4A,66B,119C 'float':52B,99C 'game':22B 'game-engin':21B 'glb':37B,118C 'gltf':3A,24B,35B,116C 'graphic':19B 'header':30B 'heap':7A,42B,74B,88C,127C 'leak':72B 'librari':32B 'load':34B 'memori':8A,75B,128C 'model':39B 'out-of-bound':43B,89C 'packag':25B 'pars':10A 'pass':68B,121C 'read':5A,47B,93C,125C 'singl':29B 'single-head':28B 'spars':54B,103C 'stride':63B 'suppli':113C 'unpack':51B,98C 'valid':70B,123C 'valu':56B,104C 'vertex':77B,130C 'vulner':94C","nicknames":[],"mitigations":[],"who_affected":"Applications that load untrusted glTF or GLB files with cgltf, such as viewers, asset pipelines or upload previews that parse models from users or the internet. Apps that only load their own trusted assets are less exposed. The sources do not name a patched version.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-18T12:17:14+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112019","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112019","severity":null,"published_at":"2026-10-18T12:17:14+00:00","modified_at":"2026-10-20T18:17:18+00:00","first_seen_at":"2026-10-23T21:57:15+00:00","fetched_at":"2026-10-23T22:28:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}