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CVE-2026-34910 is a critical improper input validation vulnerability in Ubiquiti UniFi OS that enables command injection. The flaw affects a broad range of UniFi OS deployments, including UniFi OS Server and multiple UniFi gateway, console, NVR, and NAS product families running vulnerable firmware versions. Available reporting consistently characterizes the issue as insufficient validation of attacker-controlled input that is passed to operating system command execution logic, allowing arbitrary system commands to be injected. Public analysis also indicates the vulnerability can be used as part of the Security Advisory Bulletin 064 exploit chain with CVE-2026-34908 and CVE-2026-34909 to achieve unauthenticated remote code execution with root privileges on vulnerable UniFi OS devices.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
Repository contains two security artifacts and supporting documentation: a Python exploit script (CVE-2026-34910.py) and a Nuclei template (CVE-2026-34908-unifi-auth-bypass.yaml), plus README and license. Because this repository includes a framework artifact, the main exploit logic is split between a Nuclei detection template for CVE-2026-34908 and a standalone Python PoC for CVE-2026-34910/CVE-2026-34909. The Python script is the primary offensive component. It disables TLS verification, accepts a target URL, and exposes three modes: `--check` to verify the auth bypass by requesting the internal `latest_package` handler through `/api/auth/validate-sso/..%2f..%2f..%2f`, direct command execution by injecting `evil;<command>` into the `pkg_name` query parameter with `by_cmd=true`, and `--read <path>` to retrieve arbitrary files through a traversal path under `/app-assets/users/`. The script treats HTTP 200 responses from the internal handler as success and includes a proof helper that attempts to create `/tmp/PWNED_34910` on the target. The Nuclei YAML is a detection-only template for CVE-2026-34908. It sends a single crafted GET request to `/api/auth/validate-sso/..%2f..%2f..%2fproxy/users/api/v2/ucs/update/latest_package` and matches on HTTP 200 plus response markers such as `pkg_name` and `required`, confirming unauthorized reachability of the internal handler without executing a payload. Overall purpose: demonstrate and operationalize a chain of UniFi OS vulnerabilities affecting pre-SAB-064 systems: CVE-2026-34908 auth bypass, CVE-2026-34909 arbitrary file read, and CVE-2026-34910 unauthenticated command injection RCE. The repository is not just a detector; it contains working exploit code capable of unauthenticated remote command execution and file disclosure against vulnerable UniFi OS Server targets.
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A specific vulnerability listed among the report's analyzed CVEs, but without further detail in the content.
Ubiquiti UniFi OSのコマンドインジェクションの脆弱性。本文では、この脆弱性を悪用して不審ドメインから不正ファイルをダウンロードして実行しようとする攻撃通信が観測されており、深刻度はCVSS 10.0とされている。
A Ubiquiti UniFi OS improper input validation vulnerability referenced as having been added to CISA's KEV catalog.
A UniFi OS vulnerability mentioned as part of a previously weaponized trio flagged by CISA in real-world attacks.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.