{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-16639 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-16639 is a critical authentication bypass vulnerability in Drupal Internationalization Single Sign-On, published on 25 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-2026-16639 and fix it if it is affected.\n\nWhat it is: CVE-2026-16639 is a critical authentication bypass vulnerability in Drupal Internationalization Single Sign-On, published on 25 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-2026-16639 in the wild and no public exploit code.\n\nAffected product: Drupal Internationalization Single Sign-On. 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-2026-16639/ (Markdown: https://insights.sbomify.com/CVE-2026-16639/index.md)","id":"CVE-2026-16639","markdown":"https://insights.sbomify.com/CVE-2026-16639/index.md","name":"CVE-2026-16639","record":{"aliases":["DRUPAL-CONTRIB-2026-081","GHSA-p748-p4j4-gpx6"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["security_bypass","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Drupal SSO plugin","requires_auth":"none","summary":"Attackers can bypass authentication in the Drupal Internationalization Single Sign-On module, potentially gaining unauthorized access to user accounts.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"drupal","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","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-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"description":"Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects Internationalization Single Sign-On versions: from 0.0.0 to 1.8.0.","ecosystems":["Packagist:https://packages.drupal.org/8"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Internationalization Single Sign-On - Critical - Access bypass - SA-CONTRIB-2026-081","id":"CVE-2026-16639","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"Search API Autocomplete - Moderately critical - Cross-site Scripting - SA-CONTRIB-2026-082","id":"CVE-2026-16640"},"packages":[{"ecosystem":"Packagist:https://packages.drupal.org/8","fixed":["1.8.0"],"introduced":["0"],"last_affected":[],"package":"drupal/i18n_sso","purl":"pkg:composer/drupal/i18n_sso?repository_url=https:%2F%2Fpackages.drupal.org%2F8","source":"DRUPAL-CONTRIB-2026-081"}],"prev":{"headline":"Media Folders - Moderately critical - Cross site scripting - SA-CONTRIB-2026-080","id":"CVE-2026-16638"},"products":["Internationalization Single Sign-On"],"published":"2026-08-25","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"MIT","name":"Drupal","prefix":"DRUPAL"},{"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":"total"},"state":"PUBLISHED","updated":"2026-08-26","vendors":["Drupal"]},"summary":"Attackers can bypass authentication in the Drupal Internationalization Single Sign-On module, potentially gaining unauthorized access to user accounts.","url":"https://insights.sbomify.com/CVE-2026-16639/"}