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CVE-2026-55768— GoAccess WebSocket Server: Signed 32 bit truncation of the 64 bit frame length causes a remote pre-authentication denial of service

Quick assessment

Affected
allinurl goaccess
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GoAccess 是一款实时 Web 日志分析器和交互式查看器，可在 *nix 系统的终端中或通过浏览器运行。在 1.11 版本之前，其内置的 WebSocket 服务器在强制执行最大帧大小限制之前，会将 64 位扩展帧长度截断并存入有符号 32 位的 字段。这一漏洞使得未授权的远程客户端能够绕过安全保护，触发一个约 18 EB（exabyte）大小的内存分配请求，从而导致进程终止。该问题已在 1.11 版本中得到修复。

CVSS 8.7 · High EPSS 0.28% · P20

Affected Version Matrix 1

VendorProduct Version RangeStatus
allinurl goaccess < 1.11 affected
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I. Basic Information for CVE-2026-55768

Vulnerability Information
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Vulnerability Title
GoAccess WebSocket Server: Signed 32 bit truncation of the 64 bit frame length causes a remote pre-authentication denial of service
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
allinurl goaccess < 1.11 -

II. Public POCs for CVE-2026-55768

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 11648 chars
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III. Intelligence Information for CVE-2026-55768

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Patches & Fixes for CVE-2026-55768 (1)

Vendor Advisories for CVE-2026-55768 (1)

Same Patch Batch · allinurl · 2026-07-30 · 3 CVEs total

CVE-2026-54715 7.1 HIGH GoAccess: Heap Out-of-Bounds Write in parse_browser()
CVE-2026-55777 5.3 MEDIUM GoAccess: Out-of-bounds heap read in parse_ios() via crafted User-Agent leads to remote cr

IV. Related Vulnerabilities

Same product: goaccess
Same vendor: allinurl
Same weakness: CWE-789

V. Comments for CVE-2026-55768

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