Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
GoBGP versions before 3.35.0 of github.com/osrg/gobgp/v3 are vulnerable. An attacker who can send BGP messages to the router can crash the flowspec parser by sending fewer than 20 bytes in a certain context. Upgrade github.com/osrg/gobgp/v3 to 3.35.0 or later. The source gives few details, and no fixed version is listed for github.com/osrg/gobgp.
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 |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | CNA (mitre) |
- CISA KEV Not listed.
- EPSS 0.0056, the 46th percentile, on 9 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