CVE-2025-43973: GO-2025-3633 - GoBGP does not verify that the input length in github.com/osrg/gobgp

CVE-2025-43973 · Severity: low · CVSS 3.1 · Published 2025-04-22

GoBGP does not verify that the input length in github.com/osrg/gobgp

Technologies: github.com/osrg/gobgp (Go), github.com/osrg/gobgp/v3 (Go). Vendors: Go.

Quick answers

Is CVE-2025-43973 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-43973 being exploited in the wild.
How severe is CVE-2025-43973?
Low severity, with a CVSS score of 3.1, published 22 April 2025.
Which products and versions are affected?
github.com/osrg/gobgp (Go) SEMVER:introduced=0; github.com/osrg/gobgp/v3 (Go) SEMVER:introduced=0,fixed=3.35.0.
Is there a fix for CVE-2025-43973?
Yes. github.com/osrg/gobgp/v3 (Go): upgrade to 3.35.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-43973?
Check whether you run github.com/osrg/gobgp (Go) or github.com/osrg/gobgp/v3 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/osrg/gobgp/v3 (Go): upgrade to 3.35.0 or later
    go get github.com/osrg/gobgp/v3@v3.35.0

Affected products

  • github.com/osrg/gobgp (Go) SEMVER:introduced=0
  • github.com/osrg/gobgp/v3 (Go) SEMVER:introduced=0,fixed=3.35.0

Identifiers

  • CVE-2025-43973
  • GHSA-c5jg-wr5v-2wp2
  • GO-2025-3633

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