{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-86823 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-86823 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-86823 is a medium-severity vulnerability in Unknown Newsletter, published on 16 Sep 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-2026-86823 and fix it if it is affected.\n\nWhat it is: CVE-2026-86823 is a medium-severity vulnerability in Unknown Newsletter, published on 16 Sep 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-2026-86823 in the wild and no public exploit code.\n\nAffected product: Unknown Newsletter. 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-2026-86823/ (Markdown: https://insights.sbomify.com/CVE-2026-86823/index.md)","id":"CVE-2026-86823","markdown":"https://insights.sbomify.com/CVE-2026-86823/index.md","name":"CVE-2026-86823","record":{"aliases":["GHSA-xhvp-v8j9-2mrf"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can redirect users to malicious sites and disclose subscriber tokens via the ncu parameter in the Newsletter plugin.","user_interaction":"not_required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"WPScan","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"The Newsletter  WordPress plugin before 9.3.7 does not validate the destination of the redirect performed after a public subscription action, allowing unauthenticated attackers to redirect users to arbitrary external sites and to disclose a subscriber token that grants access to that subscriber record's front-end actions.","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":"Newsletter \u003c 9.3.7 - Unauthenticated Open Redirect and Subscriber Token Disclosure via ncu Parameter","id":"CVE-2026-86823","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Newsletter \u003c 9.3.8 - Unauthenticated Subscriber PII Disclosure and Modification via Predictable Tracking Signature Key","id":"CVE-2026-86824"},"packages":[],"prev":{"headline":"Waves Central local privilege escalation via Improper XPC Client Authentication in macOS","id":"CVE-2026-86819"},"products":["Newsletter"],"published":"2026-09-16","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":"2026-09-17","vendors":["Unknown"]},"summary":"Unauthenticated attackers can redirect users to malicious sites and disclose subscriber tokens via the ncu parameter in the Newsletter plugin.","url":"https://insights.sbomify.com/CVE-2026-86823/"}