CVE-2026-55768: CWE-789: Memory Allocation with Excessive Size Value in allinurl goaccess
CVE-2026-55768 is a high-severity vulnerability in the GoAccess real-time web log analyzer prior to version 1.11. It involves improper handling of WebSocket frame lengths, where a 64-bit extended frame length is narrowed to a signed 32-bit field without proper enforcement, allowing an unauthenticated remote attacker to trigger an excessive memory allocation of approximately 18 exabytes. This causes the process to terminate unexpectedly. The issue is fixed in GoAccess version 1.11.
AI Analysis
Technical Summary
GoAccess versions before 1.11 contain a vulnerability in the built-in WebSocket server. The server narrows a 64-bit extended frame length into a signed 32-bit payload length field before enforcing the maximum frame size. This narrowing allows an unauthenticated remote client to bypass size checks and request an extremely large memory allocation (~18 exabytes), leading to process termination. This is classified under CWE-789 (Memory Allocation with Excessive Size Value) and CWE-681 (Incorrect Conversion between Numeric Types). The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity. The issue is resolved in version 1.11.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to cause a denial of service by forcing the GoAccess process to terminate due to an excessive memory allocation request. There is no indication of code execution or data leakage. The impact is limited to service disruption.
Mitigation Recommendations
Upgrade GoAccess to version 1.11 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data. Patch status is confirmed by the vendor stating the fix is in version 1.11.
CVE-2026-55768: CWE-789: Memory Allocation with Excessive Size Value in allinurl goaccess
Description
CVE-2026-55768 is a high-severity vulnerability in the GoAccess real-time web log analyzer prior to version 1.11. It involves improper handling of WebSocket frame lengths, where a 64-bit extended frame length is narrowed to a signed 32-bit field without proper enforcement, allowing an unauthenticated remote attacker to trigger an excessive memory allocation of approximately 18 exabytes. This causes the process to terminate unexpectedly. The issue is fixed in GoAccess version 1.11.
CVSS v4.0
Score 8.7high
Affected software
allinurl
goaccess
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
GoAccess versions before 1.11 contain a vulnerability in the built-in WebSocket server. The server narrows a 64-bit extended frame length into a signed 32-bit payload length field before enforcing the maximum frame size. This narrowing allows an unauthenticated remote client to bypass size checks and request an extremely large memory allocation (~18 exabytes), leading to process termination. This is classified under CWE-789 (Memory Allocation with Excessive Size Value) and CWE-681 (Incorrect Conversion between Numeric Types). The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity. The issue is resolved in version 1.11.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to cause a denial of service by forcing the GoAccess process to terminate due to an excessive memory allocation request. There is no indication of code execution or data leakage. The impact is limited to service disruption.
Mitigation Recommendations
Upgrade GoAccess to version 1.11 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data. Patch status is confirmed by the vendor stating the fix is in version 1.11.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-17T14:34:51.881Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a6bbd2e9c2644c7f8b08ccc
Added to database: 07/30/2026, 21:07:58 UTC
Last enriched: 08/07/2026, 14:31:46 UTC
Last updated: 09/13/2026, 22:01:35 UTC
Views: 52
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