Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
GoBGP versions before 4.7.0 (Go module github.com/osrg/gobgp/v4) panic when they receive a BGP UPDATE with a zero-length AS_PATH attribute while validating a confederation eBGP peer. A configured confederation eBGP neighbor can establish a session and send such an UPDATE, causing a denial of service of the peer session and possibly process termination. Upgrade to version 4.7.0 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.9 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0041, the 35th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:14 UTC First seen by agentprime
- 31 Oct 2026, 14:14 UTC Confirmed by OSV