{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-57852 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-57852 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-57852 is a medium-severity authentication bypass vulnerability in Trilby Media Grav CMS scheduler-webhook plugin, published on 20 Jul 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-2026-57852 and fix it if it is affected.\n\nWhat it is: CVE-2026-57852 is a medium-severity authentication bypass vulnerability in Trilby Media Grav CMS scheduler-webhook plugin, published on 20 Jul 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-2026-57852 in the wild and no public exploit code.\n\nAffected product: Trilby Media Grav CMS scheduler-webhook plugin. 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-2026-57852/ (Markdown: https://insights.sbomify.com/CVE-2026-57852/index.md)","id":"CVE-2026-57852","markdown":"https://insights.sbomify.com/CVE-2026-57852/index.md","name":"CVE-2026-57852","record":{"aliases":["GHSA-4p4x-7xpg-55gw"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":true,"product_category":"Grav CMS plugin","requires_auth":"none","summary":"Unauthenticated attackers can bypass webhook token validation to execute scheduled jobs, leading to remote code execution under the web server user.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-303","name":"Incorrect Implementation of Authentication Algorithm"}],"description":"Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single unauthenticated POST request to the scheduler webhook endpoint to execute all configured scheduled jobs or target a specific job, causing unintended execution of operator-defined commands under the web server process user.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Authentication Bypass via Null Short-Circuit in Grav CMS Scheduler Webhook Token Check","id":"CVE-2026-57852","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-57854"},"packages":[],"prev":{"headline":"MSI KernCoreLib64.sys Privilege Escalation via IOCTL Handlers","id":"CVE-2026-57851"},"products":["Grav CMS scheduler-webhook plugin"],"published":"2026-07-20","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-21","vendors":["Trilby Media"]},"summary":"Unauthenticated attackers can bypass webhook token validation to execute scheduled jobs, leading to remote code execution under the web server user.","url":"https://insights.sbomify.com/CVE-2026-57852/"}