{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-31326 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-31326 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-31326 is a critical authentication bypass vulnerability in Dlink Dir-816 Firmware, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-31326 and fix it if it is affected.\n\nWhat it is: CVE-2021-31326 is a critical authentication bypass vulnerability in Dlink Dir-816 Firmware, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-31326 in the wild and no public exploit code.\n\nAffected product: Dlink Dir-816 Firmware. 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-2021-31326/ (Markdown: https://insights.sbomify.com/CVE-2021-31326/index.md)","id":"CVE-2021-31326","markdown":"https://insights.sbomify.com/CVE-2021-31326/index.md","name":"CVE-2021-31326","record":{"aliases":["GHSA-frrx-wmgx-653x"],"analysis":{"component_type":"network_device","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"D-Link router","requires_auth":"none","summary":"Unauthenticated attackers can reset the D-Link DIR-816 router by sending a crafted tokenid parameter, causing a denial of service.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"dir-816_firmware","vendor":"dlink"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"D-Link DIR-816 A2 1.10 B05 allows unauthenticated attackers to arbitrarily reset the device via a crafted tokenid parameter to /goform/form2Reboot.cgi.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Auth bypass in n/a","id":"CVE-2021-31326","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"dlink:dir-816_firmware","products":["dlink:dir-816_firmware"],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-31327"},"packages":[],"prev":{"headline":"Command injection in n/a","id":"CVE-2021-31324"},"products":["n/a"],"published":"2022-03-23","related":[{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2025-45931","kev_date_added":null,"published":"2025-06-30"},{"cvss_score":9.8,"headline":"Missing authorization in n/a","id":"CVE-2024-57684","kev_date_added":null,"published":"2025-01-16"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-24331","kev_date_added":null,"published":"2024-02-21"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2024-24321","kev_date_added":null,"published":"2024-02-08"},{"cvss_score":9.8,"headline":"Command injection in n/a","id":"CVE-2023-39637","kev_date_added":null,"published":"2023-09-12"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2022-42998","kev_date_added":null,"published":"2022-10-26"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2022-43000","kev_date_added":null,"published":"2022-10-26"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["n/a"]},"summary":"Unauthenticated attackers can reset the D-Link DIR-816 router by sending a crafted tokenid parameter, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2021-31326/"}