CVE-2026-54715 GoAccess: Heap Out-of-Bounds Write in parse_browser()
A heap out-of-bounds write in GoAccess allows attackers to corrupt memory or crash the application via crafted User-Agent strings in access logs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-54715?
CVE-2026-54715 is a high-severity memory corruption vulnerability in allinurl goaccess, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through the browser. In version 1.10.2, parse_browser assumes the matched browser token begins with Opera and moves a trailing version substring to match plus five, allowing a crafted User-Agent in a processed access log to write one to four attacker-influenced bytes beyond the heap allocation and corrupt or crash GoAccess. This issue is fixed in version 1.11.
Which versions are affected by CVE-2026-54715?
How do I fix CVE-2026-54715?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-54715 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54715 exists.
Sources
Also known as DEBIAN-CVE-2026-54715, GHSA-qcx5-vh2x-35fr, UBUNTU-CVE-2026-54715.