CVE-2026-7736
High
Description
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductOsrg Gobgp
PublishedMay 4, 2026
First seenMay 4, 2026
Weakness typeCWE-191CWE-191CWE-189CWE-189
How to fix
Update
- osrg gobgp4.4.0 or later
- github.com/osrg/gobgp/v44.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| osrg gobgp | v < 4.4.0 | 4.4.0 |
| github.com/osrg/gobgp/v4Go | v < 4.4.0 | 4.4.0 |
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