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High, CVSS 8.7

Buffer Overflow vulnerability in osrg gobgp

CVE-2023-46565GHSA-6rqv-5cg7-m4x3

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Go github.com/osrg/gobgp/v3

    Affected
    <= 3.20.0
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2023-46565: 0.75% estimated exploitation activity in the next 30 days; percentile 55.00 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Buffer Overflow vulnerability in osrg gobgp commit 419c50dfac578daa4d11256904d0dc182f1a9b22 allows a remote attacker to cause a denial of service via the handlingError function in pkg/server/fsm.go.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-6rqv-5cg7-m4x3

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2023-46565

Advisory: Buffer Overflow vulnerability in osrg gobgp
IDs: CVE-2023-46565, GHSA-6rqv-5cg7-m4x3
Record: https://patchnext.com/advisories/cve-2023-46565 (revision 1, source checked 26 Oct 2026, 15:05 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/osrg/gobgp/v3: affected <= 3.20.0

## Suggested inspection (read-only)
- Go github.com/osrg/gobgp/v3: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/osrg/gobgp/v3.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-6rqv-5cg7-m4x3 (GitHub-reviewed advisory GHSA-6rqv-5cg7-m4x3 lists affected ranges: Go github.com/osrg/gobgp/v3 >=0 <=3.20.0)

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