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Vulnerability record · CVE-2026-26514 · published 4 March 2026

CVE-2026-26514: Xddxdd bird-lg-go argument injection vulnerability

XXddxdd · 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.

7.5 CVSS 3.1 High EPSS 0.63% · top 52.1% CWE-88 · Argument injection
7.5CVSS 3.1 base score
0.63%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/xddxdd/bird-lg-go/commit/6187a4e3afce6d8c29568f8c72ca497d1f5a2b56 Patch
https://github.com/xddxdd/bird-lg-go/issues/136 ExploitIssue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-26514), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.