CVE-2026-54715 Details
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.
A heap buffer overflow vulnerability has been identified in GoAccess version 1.10.2. The issue arises in the `parse_browser` function, where the application incorrectly assumes that the User-Agent string begins with 'Opera'. This assumption allows an attacker to craft a User-Agent that, when processed, writes one to two bytes beyond the allocated heap buffer. This heap corruption can lead to a crash or instability in GoAccess. The vulnerability is triggered by sending an HTTP request with a manipulated User-Agent to a web server that uses GoAccess to analyze its access logs.
Users can upgrade to GoAccess version 1.11, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 30, 2026CISA-ADP
Assessed Jul 31, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/allinurl/goaccess/security/advisories/GHSA-qcx5-vh2x-35fr | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/allinurl/goaccess/commit/81f90d9dafd6956c188dea9f944d24946d3d3351 | [email protected] | Source CodeVendor |
| https://github.com/allinurl/goaccess/security/advisories/GHSA-qcx5-vh2x-35fr | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| GoAccess | 1.10.2 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 31, 2026 | CVE Modified | CISA-ADP |
| Jul 30, 2026 | New CVE Received | [email protected] |