---
id: CVE-2026-55777
title: >-
  GoAccess is a real-time web log analyzer and interactive viewer that runs in a
  terminal in *nix systems or through the browser
summary: >-
  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 1.11, the
  parse_ios() function uses an attacker-controlled keyword-to-OS offset as both
  the source o…
severity: none
cwe:
  - CWE-125
published: '2026-07-30'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:51:43.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55777'
references:
  - url: >-
      https://github.com/allinurl/goaccess/commit/ba813ed97d998dbdcb8d87e178799a4bb2da9e81
    label: security-advisories@github.com
  - url: >-
      https://github.com/allinurl/goaccess/security/advisories/GHSA-5phr-qpgf-hgrg
    label: security-advisories@github.com
  - url: >-
      https://github.com/allinurl/goaccess/security/advisories/GHSA-5phr-qpgf-hgrg
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00445
epssPercentile: 0.36042
ingestedAt: '2026-09-08T21:11:12.258Z'
---

## Overview

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 1.11, the parse_ios() function uses an attacker-controlled keyword-to-OS offset as both the source offset and copy length for memmove, allowing a crafted User-Agent in a processed access log to read up to approximately 4 KB beyond the heap allocation and conditionally crash GoAccess. This issue is fixed in version 1.11.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.