{"apiVersion":"1.0","identifier":"CVE-2026-77814","description":"is_path_trusted in scripts/iib/api.py compares the requested path against each allowed parent directory with path.startswith(parent_path), without appending a path separator. A directory whose name merely begins with an allowed path therefore satisfies the comparison, so where /data/images is allowed a request for /data/images_private/secret.txt is treated as trusted and served by FileResponse, disclosing files the confinement was meant to exclude. Whether the check applies depends on get_enable_access_control in scripts/iib/tool.py: it returns true when IIB_ACCESS_CONTROL is set to enable, false when set to disable, and otherwise true when the host Stable Diffusion WebUI was started with share, ngrok, listen or server_name, falling back to false. Confinement is therefore active in the network-exposed WebUI deployments that rely on it, while a standalone run with no such option serves every readable file regardless of this flaw. The fix compares against parent_path joined with os.sep.","publishedAt":"2026-08-21T15:16:47","lastModifiedAt":"2026-08-21T18:16:52","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77814","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","epssProbability":0.00409,"riskScore":0.78,"affectedProduct":"Stable Diffusion WebUI","affectedVersions":"unknown","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77814","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77814","en":"https://www.redsauce.net/en/cves/CVE-2026-77814","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77814","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77814","de":"https://www.redsauce.net/de/cves/CVE-2026-77814","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77814","el":"https://www.redsauce.net/el/cves/CVE-2026-77814"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77814"}}