{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-77138 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77138 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77138 is a critical unsafe deserialization vulnerability in TYPO3 Extension \"HTML5 Video Player vs. Powermail\", 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-2026-77138 and fix it if it is affected.\n\nWhat it is: CVE-2026-77138 is a critical unsafe deserialization vulnerability in TYPO3 Extension \"HTML5 Video Player vs. Powermail\", 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-2026-77138 in the wild and no public exploit code.\n\nAffected product: TYPO3 Extension \"HTML5 Video Player vs. Powermail\". 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-2026-77138/ (Markdown: https://insights.sbomify.com/CVE-2026-77138/index.md)","id":"CVE-2026-77138","markdown":"https://insights.sbomify.com/CVE-2026-77138/index.md","name":"CVE-2026-77138","record":{"aliases":["GHSA-mj2c-4qfw-rhhc"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"TYPO3 extension","requires_auth":"none","summary":"Remote unauthenticated attackers can achieve code execution on TYPO3 servers by sending crafted serialized payloads via cookies to the HTML5 Video Player extension.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"TYPO3","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.","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":"Remote Code Execution in extension \"HTML5 Video Player vs. Powermail\" (html5videoplayer_powermail)","id":"CVE-2026-77138","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Path Traversal in extension \"Mask\" (mask)","id":"CVE-2026-77139"},"packages":[],"prev":{"headline":"SQL Injection in extension \"Forms Export\" (frp_form_answers)","id":"CVE-2026-77137"},"products":["Extension \"HTML5 Video Player vs. Powermail\""],"published":"2026-08-25","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":"total"},"state":"PUBLISHED","updated":"2026-08-25","vendors":["TYPO3"]},"summary":"Remote unauthenticated attackers can achieve code execution on TYPO3 servers by sending crafted serialized payloads via cookies to the HTML5 Video Player extension.","url":"https://insights.sbomify.com/CVE-2026-77138/"}