{"id":"CVE-2026-77815","title":"to_abs_path in scripts/iib/tool.py normalised the requested path with os.path.normpath, which collapses dot segments but does not resolve symbolic links","summary":"to_abs_path in scripts/iib/tool.py normalised the requested path with os.path.normpath, which collapses dot segments but does not resolve symbolic links. A symlink placed inside a scanned directory therefore satisfies the containment com…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-59"],"vendor":"zanllp","product":"infinite-image-browsing","affected":["infinite-image-browsing <= 1.8.0"],"published":"2026-08-21","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:43:32.537","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77815","references":[{"url":"https://github.com/zanllp/infinite-image-browsing","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zanllp/infinite-image-browsing/blob/v1.8.0/scripts/iib/api.py#L329-L344","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zanllp/infinite-image-browsing/blob/v1.8.0/scripts/iib/tool.py#L172-L175","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zanllp/infinite-image-browsing/commit/4057a624c7a23a36f0b4dc6a545b40767d602450","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zanllp/infinite-image-browsing/issues/968","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zanllp/infinite-image-browsing/pull/969","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/infinite-image-browsing-resolves-paths-with-normpath-allowing-symlink-escape-from-scanned-directories","label":"disclosure@vulncheck.com"},{"url":"https://github.com/zanllp/infinite-image-browsing/issues/968","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.0061,"epssPercentile":0.46888,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-08-26T17:29:46.505468Z"},"ingestedAt":"2026-09-24T15:45:56.698Z","slug":"CVE-2026-77815","body":"## Overview\n\nto_abs_path in scripts/iib/tool.py normalised the requested path with os.path.normpath, which collapses dot segments but does not resolve symbolic links. A symlink placed inside a scanned directory therefore satisfies the containment comparison performed by is_path_trusted in scripts/iib/api.py while pointing outside that directory, and FileResponse follows the link when serving the response, so a link created in an image directory and targeting a file such as /etc/passwd discloses that file. 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 resolves the path with os.path.realpath.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}