CVE-2026-41643
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
7.5
Description
GoBGP has Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE
Predictions
Exploit likelihood
83%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | fixed | 4.3.0-1 |
| debian | sid | fixed | 4.3.0-1 |
| debian | trixie | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/osrg/gobgp/v4 | <4.3.0 | 4.3.0 |
| GO | github.com/osrg/gobgp/v4 | <= 4.2.0 | 4.3.0 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| osrg | gobgp | {"endExcluding":"4.3.0"} | 4.3.0 |
References
- https://github.com/osrg/gobgp/releases/tag/v4.3.0
- https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
- https://nvd.nist.gov/vuln/detail/CVE-2026-41643
- https://github.com/osrg/gobgp
- https://security-tracker.debian.org/tracker/CVE-2026-41643
- https://github.com/advisories/GHSA-8rxh-r2p6-7f2q
CWEs
CWE-129
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.