dvidelabs flatcc up to 0.6.4 Verifier check_header integer overflow

Summaryinfo

A vulnerability was found in dvidelabs flatcc up to 0.6.4. It has been declared as problematic. Affected by this issue is the function check_header of the component Verifier. Executing a manipulation can lead to integer overflow. This vulnerability is tracked as CVE-2026-116734. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in dvidelabs flatcc up to 0.6.4. It has been declared as problematic. This vulnerability affects the function check_header of the component Verifier. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect availability. CVE summarizes:

flatcc through 0.6.4 contains an integer overflow vulnerability in the check_header function of the FlatBuffers verifier because its overflow guard is dead code. On 32-bit builds, attackers can supply a crafted buffer offset that wraps the bounds check, causing an out-of-bounds read before the buffer and crashing the process.

The advisory is available at github.com. This vulnerability was named CVE-2026-116734 since 10/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/26/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• dvidelabs

Name

• flatcc

Version

• 0.6.0
• 0.6.1
• 0.6.2
• 0.6.3
• 0.6.4

Website

• Product: https://github.com/dvidelabs/flatcc/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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