CVE-2026-41642

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Source
https://cve.org/CVERecord?id=CVE-2026-41642
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41642.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-41642
Aliases
Downstream
Published
2026-05-07T11:50:41.545Z
Modified
2026-07-08T07:07:20.321675047Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute
Details

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41642.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-476"
    ]
}
References

Affected packages

Git / github.com/osrg/gobgp

Affected ranges

Type
GIT
Repo
https://github.com/osrg/gobgp
Events
Introduced
c3eb0db6df91379e15ce1a8709cb1b64f482248e
Fixed
12b4ebaef14f61e1c7c7403c770b67826f0b8cf4
Database specific 
{
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:osrg:gobgp:4.3.0:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "4.3.0"
        },
        {
            "last_affected": "4.3.0"
        }
    ]
}

Affected versions

4.*
4.3.0
= 4.*
= 4.3.0
v4.*
v4.3.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41642.json"