CVE-2026-48113

unknowncovered by 1 sourcefirst seen 2026-08-03

Chisel is a TCP/UDP tunnel, transported over HTTP and secured via SSH. In versions prior to 1.11.5, authenticated clients can bypass --authfile ACL restrictions and tunnel traffic to arbitrary destinations reachable from the server. The ACL is enforced only during the initial handshake against declared remotes, but never on subsequent SSH channels that carry actual traffic. A malicious client can authenticate with a permitted remote, then open channels to any host:port it wants. This issue has been fixed in version 1.11.5.

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Exploitation outlook

Low exploitation risk0.23% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 14% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-48113: Chisel is a TCP/UDP tunnel, transported over HTTP and secured via SSH. In versions prior to 1.…nvd · 2026-08-03

External references

NVD record for CVE-2026-48113

CVE.org record

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