Low 3.7Published Mar 30, 2026

CVE-2026-5123A weakness has been identified in osrg GoBGP up to 4.3.0.

Updated under an hour ago (2026-10-19 07:20 UTC)

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It affects osrg gobgp. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for osrg gobgp

Exploited in the last 30 days

A weakness has been identified in osrg GoBGP up to 4.3.0. This impacts the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go. Executing a manipulation of the argument data[1] can lead to off-by-one. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is said to be difficult. This patch is called 67c059413470df64bc20801c46f64058e88f800f. A patch should be applied to remediate this issue.

CVSS: 3.7 LOW (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-189, CWE-193
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

osrg gobgp osrg:gobgp	before 4.4.0	NVD

References

https://github.com/osrg/gobgp/product
https://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800fpatch
https://github.com/osrg/gobgp/pull/3342issue-tracking
https://vuldb.com/submit/780179third-party-advisory, vdb-entry
https://vuldb.com/vuln/354155third-party-advisory, vdb-entry
https://vuldb.com/vuln/354155/ctipermissions-required, vdb-entry

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.