allinurl GoAccess up to 1.10 parse_ios heap-based overflow

Summaryinfo

A vulnerability marked as critical has been reported in allinurl GoAccess up to 1.10. The impacted element is the function parse_ios. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2026-55777. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in allinurl GoAccess up to 1.10. This issue affects the function parse_ios. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-55777 since 06/17/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading to version 1.11 eliminates this vulnerability.

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Productinfo

Vendor

• allinurl

Name

• GoAccess

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10

Website

• Product: https://github.com/allinurl/goaccess/

CPE 2.3info

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