{"id":"CVE-2026-111936","kind":"vulnerability","aliases":["CVE-2026-111936"],"related":[],"title":"Sigma File Manager: extension downloads can reach internal addresses via SSRF","description":"Sigma File Manager through 2.2.0 contains a server-side request forgery vulnerability because validate_remote_url() in security.rs never checks resolved IP addresses for extension download commands. A malicious extension or catalog entry can use hostnames resolving to loopback, private, or cloud metadata addresses to read internal responses via files written to the extension directory.","summary":"Sigma File Manager through 2.2.0 does not check resolved IP addresses when downloading extensions, so a malicious extension or catalog entry can point a download at loopback, private network, or cloud metadata hosts. Responses from those internal hosts can be read back from files written to the extension directory.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","self-hosted","sigma-file-manager"],"not_affected_if":["default-config"],"how_to_check":"- unknown","fix":"- unknown","status":"open","published_at":"2026-10-19T14:17:01+00:00","first_seen_at":"2026-10-23T21:57:18+00:00","triaged_at":"2026-10-25T04:25:09+00:00","updated_at":"2026-10-25T04:25:09+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T04:25:09Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"unknown","title":"Sigma File Manager: extension downloads can reach internal addresses via SSRF","impact":"medium","summary":"Sigma File Manager through 2.2.0 does not check resolved IP addresses when downloading extensions, so a malicious extension or catalog entry can point a download at loopback, private network, or cloud metadata hosts. Responses from those internal hosts can be read back from files written to the extension directory.","category":"package","nicknames":[],"who_cares":["sigma-file-manager","self-hosted"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Internal service and cloud metadata responses readable by the attacker","analyst_note":"Confirm fixed version and whether installing a malicious extension or catalog entry needs user action; check the NVD entry for affected version details.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":["default-config"],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000523,"input_tokens":3338,"output_tokens":378,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-111936':14A,17A '-2026':13A,16A '2.2.0':30B,79C 'address':9A,36B,98C,119C 'back':67B 'catalog':45B,107C 'check':33B,95C 'cloud':56B,117C 'command':102C 'contain':80C 'cve':12A,15A 'directori':74B,130C 'download':5A,38B,50B,101C 'entri':46B,108C 'extens':4A,39B,43B,73B,100C,105C,129C 'file':2A,24B,27B,69B,76C,125C 'forgeri':86C 'host':21B,58B,63B 'hostnam':111C 'intern':8A,62B,122C 'ip':35B,97C 'loopback':52B,114C 'malici':42B,104C 'manag':3A,25B,28B,77C 'metadata':57B,118C 'network':54B 'never':94C 'packag':18B 'point':48B 'privat':53B,115C 'reach':7A 'read':66B,121C 'remot':90C 'request':85C 'resolv':34B,96C,112C 'respons':59B,123C 'security.rs':93C 'self':20B 'self-host':19B 'server':83C 'server-sid':82C 'side':84C 'sigma':1A,23B,26B,75C 'sigma-file-manag':22B 'ssrf':11A 'url':91C 'use':110C 'valid':89C 'via':10A,124C 'vulner':87C 'written':70B,126C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-19T14:17:01+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/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-2026-111936","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111936","severity":null,"published_at":"2026-10-19T14:17:01+00:00","modified_at":"2026-10-22T03:16:32+00:00","first_seen_at":"2026-10-23T21:57:18+00:00","fetched_at":"2026-10-23T22:28:57+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"}