CVE catalog
CVE-2026-37461
An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.34% · Oct 25, 2026
An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gobgp | sid | 4.8.0-1 | fixed |
| Debian | gobgp | forky | 4.8.0-1 | fixed |
| Debian | gobgp | trixie | 3.36.0-2 | vulnerable |
| Debian | gobgp | bookworm | 3.10.0-1 | vulnerable |
| Cpe | gobgp | Not reported | 3.23.0-1ubuntu0.3+esm4 | fixed |
| Cpe | gobgpd | Not reported | 3.23.0-1ubuntu0.3+esm4 | fixed |
| Cpe | golang-github-osrg-gobgp-dev | Not reported | 3.23.0-1ubuntu0.3+esm4 | fixed |
| Cpe | gobgp | Not reported | Not reported | vulnerable |
| Cpe | gobgp | Not reported | Not reported | unknown |
| Go | github.com/osrg/gobgp/v4 | Not reported | 4.4.0 | fixed |
| Ubuntu | gobgp | pro | 3.36.0-2 | vulnerable |
| Ubuntu | gobgp | pro | 3.36.0-2build1 | vulnerable |
| Ubuntu | gobgp | pro | 3.36.0-2ubuntu0.1~esm1 | fixed |
| Ubuntu | gobgp | pro | 3.36.0-2 | vulnerable |
| Ubuntu | gobgp | pro | 3.36.0-2build1 | vulnerable |
| Ubuntu | gobgp | pro | 3.36.0-2ubuntu0.1~esm1 | fixed |
| Ubuntu | gobgp | 25.10 | 3.35.0-1 | vulnerable |
| Ubuntu | gobgp | 25.10 | 3.36.0-2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gobgp | source | sid | 4.4.0-1 | not yet assigned | Not reported | Not reported |
| Debian | gobgp | source | forky | 4.4.0-1 | not yet assigned | Not reported | Not reported |
| Debian | gobgp | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | gobgp | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Cpe | gobgp | cpe | Not reported | 3.23.0-1ubuntu0.3+esm4 | Not reported | Not reported | Not reported |
| Cpe | gobgpd | cpe | Not reported | 3.23.0-1ubuntu0.3+esm4 | Not reported | Not reported | Not reported |
| Cpe | golang-github-osrg-gobgp-dev | cpe | Not reported | 3.23.0-1ubuntu0.3+esm4 | Not reported | Not reported | Not reported |
| Go | github.com/osrg/gobgp/v4 | Go | Not reported | 4.4.0 | Not reported | Not reported | Not reported |
| Ubuntu | gobgp | deb | pro | 3.36.0-2ubuntu0.1~esm1 | Not reported | USN-8348-1 | Not reported |
| Ubuntu | gobgp | deb | pro | 3.36.0-2ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2026-37461 | Not reported |
Notes
[trixie] gobgp: Minor issue [bookworm] gobgp: Minor issue, not exploitable in practice; caller guarantees >=20 bytes
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gobgpd]Affected
Source package: [gobgp]
Details (2)
3.10.0-1+b4· amd64 · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
3.10.0-1+b4· arm64 · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
- [golang-github-osrg-gobgp-dev]Affected
Source package: [gobgp]
Details (2)
3.10.0-1· all · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
3.10.0-1· all · bookwormAffected
nvd · gobgp · debian · bookworm; nvd · gobgp · debian · 12
[Debian 13 (Trixie)]
- [gobgpd]Affected
Source package: [gobgp]
Details (4)
3.36.0-2+b3· amd64 · trixieAffected
nvd · gobgp · debian · 13
3.36.0-2+b3· arm64 · trixieAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· amd64 · trixie-backportsAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· arm64 · trixie-backportsAffected
nvd · gobgp · debian · 13
- [golang-github-osrg-gobgp-dev]Affected
Source package: [gobgp]
Details (4)
3.36.0-2· all · trixieAffected
nvd · gobgp · debian · 13
3.36.0-2· all · trixieAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· all · trixie-backportsAffected
nvd · gobgp · debian · 13
4.7.0-1~bpo13+1· all · trixie-backportsAffected
nvd · gobgp · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-37461]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-37461]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-37461]
- [https://osv.dev/vulnerability/USN-8348-1]
- [https://pkg.go.dev/vuln/GO-2026-5713]
- [https://security-tracker.debian.org/tracker/CVE-2026-37461]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37461.json]
- [https://ubuntu.com/security/notices/USN-8348-1]
[Debian Security Tracker] · [FIRST EPSS] · [Go Vulnerability Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [Ubuntu Security Notices (USN)]