{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-16257 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-16257 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-16257 is a high-severity authentication bypass vulnerability in Unknown Arvow AI SEO Writer, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-16257 and fix it if it is affected.\n\nWhat it is: CVE-2026-16257 is a high-severity authentication bypass vulnerability in Unknown Arvow AI SEO Writer, published on 10 Aug 2026. 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-2026-16257 in the wild and no public exploit code.\n\nAffected product: Unknown Arvow AI SEO Writer. 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-2026-16257/ (Markdown: https://insights.sbomify.com/CVE-2026-16257/index.md)","id":"CVE-2026-16257","markdown":"https://insights.sbomify.com/CVE-2026-16257/index.md","name":"CVE-2026-16257","record":{"aliases":["GHSA-qhv8-f57q-hvv7"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_modify","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can bypass access controls via type juggling to create arbitrary posts and disclose sensitive information in the Arvow AI SEO Writer plugin.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"WPScan","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"The Arvow AI SEO Writer WordPress plugin before 1.5.4 does not properly restrict access to one of its REST endpoints, whose only access control can be bypassed by unauthenticated users through type juggling when the Arvow AI SEO Writer WordPress plugin before 1.5.4 has not been configured, allowing them to create arbitrary posts and pages and to disclose author account and taxonomy information.","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":"Arvow AI SEO Writer \u003c 1.5.4 - Unauthenticated Arbitrary Post Creation via Webhook Secret Type-Juggling","id":"CVE-2026-16257","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Ajax Search Lite \u003c 4.14.5 - Unauthenticated PHP Object Injection via Search Statistics REST Endpoint","id":"CVE-2026-16258"},"packages":[],"prev":{"headline":"Pouco Import Users \u003c= 1.0.0 - Unauthenticated Privilege Escalation","id":"CVE-2026-16256"},"products":["Arvow AI SEO Writer"],"published":"2026-08-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-11","vendors":["Unknown"]},"summary":"Unauthenticated attackers can bypass access controls via type juggling to create arbitrary posts and disclose sensitive information in the Arvow AI SEO Writer plugin.","url":"https://insights.sbomify.com/CVE-2026-16257/"}