SSRF in Aleksey-Hoffman Sigma File Manager
CVE-2026-111936
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/aleksey-hoffman/sigma-file-manager/issues/552 (issue-tracking)
- github.com/aleksey-hoffman/sigma-file-manager/commit/45cedf892f800c6b140b0e3cd6… (patch)
- github.com/aleksey-hoffman/sigma-file-manager/blob/v2.2.0/src-tauri/src/extensi… (technical-description)
- github.com/aleksey-hoffman/sigma-file-manager/blob/v2.2.0/src-tauri/src/extensi… (technical-description)
- www.vulncheck.com/advisories/sigma-file-manager-through-2.2.0-ssrf-via-extensio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111936?
- CVE-2026-111936 is a medium-severity vulnerability in Aleksey-Hoffman Sigma File Manager, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2026-10-19.
- How severe is CVE-2026-111936?
- Medium severity. CVSS v3 base score is 4.3 out of 10.