Golang
CVE-2026-26514
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
4DescriptionCVE.org
An Argument Injection vulnerability exists in bird-lg-go before commit 6187a4e. The traceroute module uses shlex.Split to parse user input without validation, allowing remote attackers to inject arbitrary flags (e.g., -w, -q) via the q parameter. This can be exploited to cause a Denial of Service (DoS) by exhausting system resources.
AnalysisAI
Remote attackers can inject arbitrary command-line arguments into bird-lg-go's traceroute module through unsanitized user input, enabling denial-of-service attacks that exhaust system resources. The vulnerability affects Golang and bird-lg-go installations prior to commit 6187a4e, and public exploit code exists. A patch is available to remediate this high-severity flaw.
Technical ContextAI
Affects the the q component of Bird-Lg-Go. An Argument Injection vulnerability exists in bird-lg-go before commit 6187a4e. The traceroute module uses shlex.Split to parse user input without validation, allowing remote attackers to inject arbitrary flags (e.g., -w, -q) via the q parameter. This can be exploited to cause a Denial of Service (DoS) by exhausting system resources.
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
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Same technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today