{"cve":"CVE-2024-43798","nvd":{"published":"2024-08-26T23:15:04.160","modified":"2026-06-17T07:51:44.070","status":"Deferred","description":"Chisel is a fast TCP/UDP tunnel, transported over HTTP, secured via SSH. The Chisel server doesn't ever read the documented `AUTH` environment variable used to set credentials, which allows any unauthenticated user to connect, even if credentials were set. Anyone running the Chisel server that is using the `AUTH` environment variable to specify credentials to authenticate against is affected by this vulnerability. Chisel is often used to provide an entrypoint to a private network, which means services that are gated by Chisel may be affected. Additionally, Chisel is often used for exposing services to the internet. An attacker could MITM requests by connecting to a Chisel server and requesting to forward traffic from a remote port. This issue has been addressed in release version 1.10.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","score":8.6},"cwes":["CWE-306","CWE-1068"],"references":["https://github.com/jpillora/chisel/security/advisories/GHSA-38jh-8h67-m7mj"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2024-43798","score":0.0045,"percentile":0.39097,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-38jh-8h67-m7mj","url":"https://osv.dev/vulnerability/GHSA-38jh-8h67-m7mj","summary":"Chisel's AUTH environment variable not respected in server entrypoint","modified":"2024-08-30T17:42:36.136463Z","packages":[{"ecosystem":"Go","name":"github.com/jpillora/chisel","purl":"pkg:golang/github.com/jpillora/chisel","ranges":["<1.10.0"],"fixed":["1.10.0"]}]},{"id":"GO-2024-3100","url":"https://osv.dev/vulnerability/GO-2024-3100","summary":"Chisel's AUTH environment variable not respected in server entrypoint in github.com/jpillora/chisel","modified":"2026-03-03T04:55:45.966101Z","packages":[{"ecosystem":"Go","name":"github.com/jpillora/chisel","purl":"pkg:golang/github.com/jpillora/chisel","ranges":["<1.10.0"],"fixed":["1.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}