{"id":"CVE-2026-77814","summary":"Infinite Image Browsing is_path_trusted Prefix Comparison Omits the Trailing Path Separator","details":"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.","modified":"2026-08-23T03:53:41.628846743Z","published":"2026-08-21T15:03:08.589Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77814.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-22"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77814.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77814"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/infinite-image-browsing-is-path-trusted-prefix-comparison-omits-the-trailing-path-separator"},{"type":"REPORT","url":"https://github.com/zanllp/infinite-image-browsing/issues/968"},{"type":"REPORT","url":"https://github.com/zanllp/infinite-image-browsing/pull/969"},{"type":"FIX","url":"https://github.com/zanllp/infinite-image-browsing/commit/4057a624c7a23a36f0b4dc6a545b40767d602450"},{"type":"PACKAGE","url":"https://github.com/zanllp/infinite-image-browsing"},{"type":"ARTICLE","url":"https://github.com/zanllp/infinite-image-browsing/blob/v1.8.0/scripts/iib/api.py#L329-L344"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zanllp/infinite-image-browsing","events":[{"introduced":"0"},{"fixed":"4057a624c7a23a36f0b4dc6a545b40767d602450"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"last_affected":"1.8.0"}]}}],"versions":["v1.8.0","v1.7.1","v1.7.0","v1.6.0","v1.5.1","v1.5.0","v1.4.0","v1.3.1","v1.3.0","v1.2.0","v1.1.0","v1.0.0","v0.17.1","v0.17.0","v0.16.0","v0.15.0","v0.14.0","v0.13.0","v0.12.0","v0.11.0","v0.10.1","v0.10.0","v0.9.0","v0.8.1","v0.8.0","v0.7.1","v0.7.0","v0.6.0","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77814.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}