memononen NanoSVG Rasterizer nsvg__addActive integer overflow

Summaryinfo

A vulnerability labeled as problematic has been found in memononen NanoSVG. Affected by this issue is the function nsvg__addActive of the component Rasterizer. Such manipulation leads to integer overflow. This vulnerability is traded as CVE-2026-88368. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in memononen NanoSVG (the affected version unknown). It has been rated as problematic. Affected by this issue is the function nsvg__addActive of the component Rasterizer. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

NanoSVG commit 239e102ec contains an incorrect numeric conversion vulnerability in the rasterizer's nsvg__addActive() function. A specially crafted SVG document containing sufficiently large geometry coordinates can cause fixed-point-scaled edge coordinates to exceed the range representable by int. The rasterizer subsequently converts these values to int without range validation, resulting in undefined behavior and possible process termination, leading to denial of service.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-88368 since 09/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for 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 09/24/2026).

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

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Productinfo

Vendor

• memononen

Name

• NanoSVG

Website

• Product: https://github.com/memononen/nanosvg/

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