dmonad lib0 up to 0.2.118 Decoder readFromDataView out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in dmonad lib0 up to 0.2.118. Affected by this issue is the function readFromDataView of the component Decoder. The manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2026-102521. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in dmonad lib0 up to 0.2.118. This issue affects the function readFromDataView of the component Decoder. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:

The decoder in `readFromDataView` in lib0 before 0.2.119 can be tricked into reading more than it should from a buffer. The vulnerability allows reading past the decoders' view, thus exposing adjacent process memory. This can be anything that is currently in the head, for example credentials or logs. This is similar to but different from GHSA-r5c8-rf4w-qrq8.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-102521 since 09/29/2026. 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 0.2.119 eliminates this vulnerability.

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Productinfo

Vendor

• dmonad

Name

• lib0

Version

• 0.2.118

Website

• Product: https://github.com/dmonad/lib0/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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