High 7.3Published May 4, 2026

CVE-2026-7736osrg GoBGP mrt.go parseRibEntry integer underflow

Updated under an hour ago (Oct 26, 2026, 7:20 AM ET)

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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 vulnerability was determined in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function parseRibEntry of the file pkg/packet/mrt/mrt.go. Executing a manipulation can lead to integer underflow. It is possible to launch the attack remotely. Upgrading to version 4.4.0 addresses this issue. This patch is called 76d911046344a3923cbe573364197aa081944592. It is suggested to upgrade the affected component.

CVSS: 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C
Weakness (CWE): CWE-191, CWE-189
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: May 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

osrg GoBGP osrg:gobgp	4.0; 4.1; 4.2; 4.3.0; 4.4.0 not affected	CNA record
osrg gobgp osrg:gobgp	before 4.4.0	NVD

References

https://vuldb.com/vuln/360911vdb-entry, technical-description, third-party-advisory
https://vuldb.com/vuln/360911/ctisignature, permissions-required, vdb-entry
https://vuldb.com/submit/807604third-party-advisory, vdb-entry
https://github.com/osrg/gobgp/commit/76d911046344a3923cbe573364197aa081944592patch
https://github.com/osrg/gobgp/releases/tag/v4.4.0patch, product
https://github.com/osrg/gobgp/product

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.