CVE-2026-5124: medium-severity vulnerability in osrg GoBGP
osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.3%
A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is told to be difficult. The identifier of the patch is f0f24a2a901cbf159260698211ab15c583ced131. To fix this issue, it is recommended to deploy a patch.
CVSS: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
Affected products
osrg · GoBGPRelated CVEs — osrg GoBGP
In the same product, most dangerous first.
CVE-2026-7737MEDIUMosrg GoBGP BMP Parser bmp.go BMPStatisticsReport.ParseBody out-of-boundsEPSS 0.6%CVE-2025-7464MEDIUMosrg GoBGP rtr.go SplitRTR out-of-boundsEPSS 0.5%CVE-2026-7734MEDIUMosrg GoBGP SRv6 L3 Service prefix_sid.go SRv6L3ServiceAttribute.DecodeFromBytes denial of serviceEPSS 0.5%CVE-2026-7736MEDIUMosrg GoBGP mrt.go parseRibEntry integer underflowEPSS 0.5%CVE-2026-5123MEDIUMosrg GoBGP bgp.go DecodeFromBytes off-by-oneEPSS 0.4%CVE-2026-7735MEDIUMosrg GoBGP AIGP Attribute bgp.go PathAttributeAigp.DecodeFromBytes buffer overflowEPSS 0.4%