CVE-2026-5122
Performing a manipulation of the argument domainNameLen results in improper access controls.
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
Description
A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.
- CVSS 4.0
- 6.3 MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.29% probability · 22th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-266, CWE-284
- Affected
- osrg/gobgp
- Source
- cna@vuldb.com
References
- https://github.com/osrg/gobgp/Product
- https://github.com/osrg/gobgp/commit/2b09db390a3d455808363c53e409afe6b1b86d2dPatch
- https://github.com/osrg/gobgp/pull/3343Issue Tracking
- https://vuldb.com/submit/780124Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/354154Third Party Advisory, VDB Entry
- https://vuldb.com/vuln/354154/ctiPermissions Required, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.