CVE-2026-55768

GoAccess WebSocket Server: Signed 32 bit truncation of the 64 bit frame length causes a remote pre-authentication denial of service

State: Published
Severity: 8.7 High
Published: Jul 30, 2026
Updated: Jul 31, 2026
Reserved: Jun 17, 2026

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Description

GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through the browser. Prior to version 1.11, the built-in WebSocket server narrows a 64-bit extended frame length into the signed 32-bit WSFrame.payloadlen field before enforcing the maximum frame size, allowing an unauthenticated remote client to bypass the guard and force an approximately 18-exabyte allocation request that terminates the process. This issue is fixed in version 1.11.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-789 Memory Allocation with Excessive Size Value
CWE-681 Incorrect Conversion between Numeric Types

Affected Products

Product	Versions
goaccessallinurl	< 1.11Affected

References

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