{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5339 exists.","fix":"No fix has been published for CVE-2026-5339 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5339 is a medium-severity command injection vulnerability in Tenda G103, published on 2 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-5339 and fix it if it is affected.\n\nWhat it is: CVE-2026-5339 is a medium-severity command injection vulnerability in Tenda G103, published on 2 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5339 exists.\n\nAffected product: Tenda G103. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-5339/ (Markdown: https://insights.sbomify.com/CVE-2026-5339/index.md)","id":"CVE-2026-5339","markdown":"https://insights.sbomify.com/CVE-2026-5339/index.md","name":"CVE-2026-5339","record":{"aliases":["GHSA-7g3h-f8vq-89vv"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Tenda G103 router","requires_auth":"high_privilege","summary":"Remote attackers can execute arbitrary commands on Tenda G103 routers by manipulating specific authentication parameters in the setting handler.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[{"product":"g103_firmware","vendor":"tenda"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command"},{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"A vulnerability was detected in Tenda G103 1.0.0.5. The impacted element is the function action_set_net_settings of the file gpon.lua of the component Setting Handler. Performing a manipulation of the argument authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Tenda G103 Setting gpon.lua action_set_net_settings command injection","id":"CVE-2026-5339","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":12,"next":{"headline":"Fancy Image Show \u003c= 9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes","id":"CVE-2026-5340"},"packages":[],"prev":{"headline":"Tenda G103 Setting system.lua action_set_system_settings command injection","id":"CVE-2026-5338"},"products":["G103"],"published":"2026-04-02","related":[{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-27076","kev_date_added":null,"published":"2023-04-10"},{"cvss_score":8.8,"headline":"Command injection in n/a","id":"CVE-2023-33530","kev_date_added":null,"published":"2023-06-06"},{"cvss_score":7.5,"headline":"Command injection in n/a","id":"CVE-2023-27079","kev_date_added":null,"published":"2023-03-23"},{"cvss_score":5.1,"headline":"Tenda G103 Setting system.lua action_set_system_settings command injection","id":"CVE-2026-5338","kev_date_added":null,"published":"2026-04-02"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-02","vendors":["Tenda"]},"summary":"Remote attackers can execute arbitrary commands on Tenda G103 routers by manipulating specific authentication parameters in the setting handler.","url":"https://insights.sbomify.com/CVE-2026-5339/"}