{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-78159 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-78159 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-78159 is a critical code injection vulnerability in stellarwp The Events Calendar, published on 12 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-2026-78159 and fix it if it is affected.\n\nWhat it is: CVE-2026-78159 is a critical code injection vulnerability in stellarwp The Events Calendar, published on 12 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-2026-78159 in the wild and no public exploit code.\n\nAffected product: stellarwp The Events Calendar. 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-2026-78159/ (Markdown: https://insights.sbomify.com/CVE-2026-78159/index.md)","id":"CVE-2026-78159","markdown":"https://insights.sbomify.com/CVE-2026-78159/index.md","name":"CVE-2026-78159","record":{"aliases":["GHSA-9c57-9fxg-8x9j"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code on WordPress sites using The Events Calendar plugin if comments are enabled on event posts.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","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-94","name":"Improper Control of Generation of Code"}],"description":"The The Events Calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 6.17.3 via the parse_array function. This is due to insufficient validation of the widget 'classes' map, allowing a plain-array payload to bypass the is_safe_widget_instance() object check and reach the callable-invocation sink in Element_Classes::parse_array(). This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires that the targeted site has comments enabled on tribe_events posts and that at least one comment containing a crafted wp:legacy-widget block has been submitted, as the attack chain is triggered when do_blocks() processes the single-event HTML including the comment area.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-19","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-19T16:52:24Z","kind":"github_poc","ref":"https://github.com/abraxas/CVE-2026-78159","stars":1,"title":"CVE-2026-78159 - stellarwp - Critical 9.8 - Unauthenticated POST /wp-comments-post.php - Remote Code Execution"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Code injection in The Events Calendar","id":"CVE-2026-78159","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"Dolibarr ERP User Notes note.php authorization","id":"CVE-2026-78160"},"packages":[],"prev":{"headline":"Open5GS AMF UEContextReleaseRequest Path improper authorization","id":"CVE-2026-78158"},"products":["The Events Calendar"],"published":"2026-09-12","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["stellarwp"]},"summary":"Unauthenticated attackers can execute arbitrary code on WordPress sites using The Events Calendar plugin if comments are enabled on event posts.","url":"https://insights.sbomify.com/CVE-2026-78159/"}