Tatsh bincookie up to 0.1.8 bincookie.h bincookie_init_file out-of-bounds

Summaryinfo

A vulnerability was found in Tatsh bincookie up to 0.1.8. It has been classified as problematic. This affects the function bincookie_init_file of the file bincookie.h. Performing a manipulation results in out-of-bounds. This vulnerability is reported as CVE-2026-55246. The attack requires a local approach. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Tatsh bincookie up to 0.1.8. It has been classified as problematic. This affects the function bincookie_init_file of the file bincookie.h. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

bincookie is a header-only binarycookies parser. Prior to 0.1.9, bincookie_init_file() in bincookie.h allocates a buffer using the actual .binarycookies file length but trusts the file-controlled num_pages field as the loop bound for byte-swapping page_sizes entries. A crafted file can make the loop read and write beyond the heap allocation, and related unvalidated page sizes and cookie_offsets can drive additional out-of-bounds accesses in page and cookie iteration. Applications that parse an attacker-supplied binarycookies file may crash or suffer heap corruption that can potentially enable code execution. This issue is fixed in version 0.1.9.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-55246 since 06/16/2026. The exploitability is told to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 0.1.9 eliminates this vulnerability.

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Productinfo

Vendor

• Tatsh

Name

• bincookie

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.1.3
• 0.1.4
• 0.1.5
• 0.1.6
• 0.1.7
• 0.1.8

Website

• Product: https://github.com/Tatsh/bincookie/

CPE 2.3info

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CPE 2.2info

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