CVE-2026-5123

LOW 3.7

osrg GoBGP bgp.go DecodeFromBytes off-by-one

CVSS Score

3.7

EPSS Score

0.0%

EPSS Percentile

14th

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.

CWE	CWE-193 CWE-189
Vendor	osrg
Product	gobgp
Published	Mar 30, 2026
Last Updated	Apr 1, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

osrg / GoBGP

4.0 4.1 4.2 4.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/354155 vuldb.com: https://vuldb.com/vuln/354155/cti vuldb.com: https://vuldb.com/submit/780179 github.com: https://github.com/osrg/gobgp/pull/3342 github.com: https://github.com/osrg/gobgp/commit/67c059413470df64bc20801c46f64058e88f800f github.com: https://github.com/osrg/gobgp/

Credits

🔍 Sunxj (VulDB User)