CVE-2026-7736: GoBGP has an Integer Underflow Issue

May 4, 2026 (updated May 8, 2026)

A vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.

References

github.com/advisories/GHSA-hj4w-qr9j-c4cf
github.com/osrg/gobgp
github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592
github.com/osrg/gobgp/releases/tag/v4.4.0
nvd.nist.gov/vuln/detail/CVE-2026-7736
vuldb.com/submit/807604
vuldb.com/vuln/360911
vuldb.com/vuln/360911/cti

Code Behaviors & Features

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