CVE-2026-26514
Xddxdd Bird-Lg-Go ≤ 1.4.1
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSummary
CVE-2026-26514 is a high-severity Argument Injection (CWE-88) vulnerability in Xddxdd Bird-Lg-Go. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked at the 32th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-26514 is an Argument Injection vulnerability (CWE-88) in the bird-lg-go project, a Go-language implementation of a BGP looking glass, affecting versions prior to commit 6187a4e. The issue resides in the traceroute module, which relies on shlex.Split to parse user-supplied input without proper validation. This allows attackers to inject arbitrary command-line flags, such as -w or -q, through the q parameter.
Remote, unauthenticated attackers can exploit this vulnerability over the network with low complexity, as indicated by its CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). By crafting malicious q parameter values, attackers can manipulate the traceroute command to exhaust system resources, resulting in a Denial of Service (DoS) condition that disrupts service availability.
Mitigation is addressed in commit 6187a4e3afce6d8c29568f8c72ca497d1f5a2b56, available via the project's GitHub repository, which resolves the parsing flaw. Additional details are documented in GitHub issue #136. Security practitioners should update to this commit or later and review deployments of bird-lg-go for exposure.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9411
Vulnerability Data
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…
more
cause a Denial of Service (DoS) by exhausting system resources.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5
Mitigating Controls (NIST 800-53 r5) AI
Developer testing can discover argument-injection flaws in command-construction code but does not stop their introduction.
Input validation directly stops construction of command strings containing unneutralized delimiters or injected arguments.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require proper input validation and command construction to prevent argument injection.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect argument injection but does not prevent it at the source.
Secure development lifecycle mandates input validation and command construction practices that directly prevent argument injection.
Application security requirements include explicit rules for safe command-line argument handling and escaping.
Secure architecture principles discourage unsafe command invocation patterns and favor safer APIs.
Secure coding standards explicitly require proper neutralization of command arguments, directly eliminating CWE-88.
Change management can catch unsafe command patterns during reviews but is not a direct mitigation.