CVE-2026-5122A security flaw has been discovered in osrg GoBGP up to 4.3.0.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 3.7 LOW (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-266, CWE-284
- 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
osrg gobgp osrg:gobgp | before 4.4.0 | NVD |
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
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.