CVE-2026-30405

Exp

An issue in GoBGP gobgpd v.4.2.0 allows a remote attacker to cause a denial of service via the NEXT_HOP path attribute

Published: 2026-03-16 Last update: 2026-04-07 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-30405 is rated Exploit Available (57.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.16%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2026-30405

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2026-30405

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-17 0.07% 0.16% +0.08%
2 2026-03-17 — 0.07% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-30405

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-30405

GitHub Security Advisory for CVE-2026-30405

GHSA-4p9m-8gc4-rw2h · Severity: high · Ecosystem: go — GoBGP vulnerable to a denial of service via the NEXT_HOP path attribute

OS Trackers for CVE-2026-30405

vendor priority summary link
debian not yet assigned CVE-2026-30405 not yet assigned priority: Debian including 1 source packages (gobgp), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-30405
ubuntu medium CVE-2026-30405 medium priority: Ubuntu including 1 source packages (gobgp), 6 status rows across 6 suites (bionic, focal, jammy, noble, questing, upstream): needs-triage 6. https://ubuntu.com/security/CVE-2026-30405

Affected software / configurations for CVE-2026-30405

Vendor Product Version Raw CPE
osrg gobgp 4.2.0 cpe:2.3:a:osrg:gobgp:4.2.0:*:*:*:*:*:*:*

References for CVE-2026-30405

URL Tags
https://github.com/osrg/gobgp/issues/3305 Exploit Issue Tracking Vendor Advisory
cvelogic Threat Intelligence