GitHub Advisoryadvisory · Go
GHSA-hj4w-qr9j-c4cf GoBGP has an Integer Underflow Issue
MEDIUM
Official page ↗
- Aliases
- CVE-2026-7736
- Ecosystem
- Go
- Packages
- github.com/osrg/gobgp/v4
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-191
- Reviewed
- 2026-05-08
Affected packages
• Go github.com/osrg/gobgp/v4: < 4.4.0 → fixed in 4.4.0
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.
Related
Alias · CVE (1)
- CVE-2026-7736 A vulnerability was determined in osrg GoBGP up to 4.3.0. vulnerability
Weakness · CWE (1)
- CWE-191 Integer Underflow (Wrap or Wraparound) weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-7736 advisory
- https://github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592 web
- https://github.com/osrg/gobgp package
- https://github.com/osrg/gobgp/releases/tag/v4.4.0 web
- https://vuldb.com/submit/807604 web
- https://vuldb.com/vuln/360911 web
- https://vuldb.com/vuln/360911/cti web