CVE-2026-48113
High · CVSS 8.5Published 2026-08-03
CVSS
8.5
High
EPSS
—
exploit probability
Active Exploit
No
not yet listed
What is CVE-2026-48113?
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.
CVSS Score Explained
CVSS 8.5 is High severity. Exploitation is likely straightforward and the impact is significant — data loss, privilege escalation, or remote code execution are common outcomes. Patch as soon as possible.
EPSS Exploitation Probability
No EPSS score yet — model needs more data on this CVE.
References & Patches
- ›https://github.com/jpillora/chisel/commit/44310b65667a97901874ffdf4815b3732c22eaa3
- ›https://github.com/jpillora/chisel/security/advisories/GHSA-24fp-5v3p-rvpw
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