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CVE-2026-34909 is a critical path traversal vulnerability in Ubiquiti UniFi OS. A malicious actor with network access can send crafted requests that escape the intended application directory boundaries and access files on the underlying operating system. The flaw is consistent with improper limitation of a pathname to a restricted directory and affects the UniFi OS web or API layer. Public reporting indicates the issue can expose sensitive system files and that accessed files may be leveraged to manipulate or obtain access to an underlying account on the device. The vulnerability was disclosed as part of Security Advisory Bulletin 064 and affects multiple UniFi OS device families and UniFi OS Server prior to vendor-fixed releases.
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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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67 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability listed among the report's analyzed CVEs, but without further detail in the content.
Ubiquiti UniFi OSのパストラバーサルの脆弱性。本文では、この脆弱性を狙った攻撃が観測されており、深刻度はCVSS 10.0とされている。
A Ubiquiti UniFi OS path traversal 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.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.