{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-85520 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-85520 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-85520 is a critical vulnerability in MyPresta Google Merchant Center Feed, published on 29 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-2026-85520 and fix it if it is affected.\n\nWhat it is: CVE-2026-85520 is a critical vulnerability in MyPresta Google Merchant Center Feed, published on 29 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-2026-85520 in the wild and no public exploit code.\n\nAffected product: MyPresta Google Merchant Center Feed. 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-2026-85520/ (Markdown: https://insights.sbomify.com/CVE-2026-85520/index.md)","id":"CVE-2026-85520","markdown":"https://insights.sbomify.com/CVE-2026-85520/index.md","name":"CVE-2026-85520","record":{"aliases":["GHSA-mxmh-vx83-qfxg"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"PrestaShop module","requires_auth":"none","summary":"Unauthenticated attackers can write arbitrary files to the server via the feed.php endpoint, leading to remote code execution.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","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:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"}],"description":"Google Merchant Center Feed (gmfeed) module for PrestaShop is vulnerable to unauthenticated arbitrary file write in the feed.php endpoint. An unauthenticated attacker can send a crafted request that controls the output file name, path, extension, and content through request parameters. Due to the lack of authentication and input validation, the request is processed successfully, allowing an attacker to write and execute arbitrary PHP code, resulting in remote code execution (RCE).\n\nThis issue was fixed in version 2.3.9.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-29","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-29T13:51:05Z","kind":"github_poc","ref":"https://github.com/murrez/CVE-2026-85520","stars":0,"title":"CVE-2026-85520 PoC (PoCbit) — PrestaShop MyPresta gmfeed ≤2.3.9 unauthenticated arbitrary file write via feed.php (Save to file URL) → RCE. check + exploit + mass bulk (--list -j). https://pocbit.org/pocs/cve-2026-85520"}],"tier":"poc_unverified"},"has_fix":null,"headline":"Unauthenticated arbitrary file write leading to RCE in gmfeed PrestaShop module","id":"CVE-2026-85520","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"file_upload","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"valkey-io valkey Slot Migration cluster_migrateslots.c createSlotImportJob out-of-bounds","id":"CVE-2026-85522"},"packages":[],"prev":{"headline":"Openscap: openscap: arbitrary file write via path traversal in source datastream decomposition","id":"CVE-2026-85518"},"products":["Google Merchant Center Feed"],"published":"2026-09-29","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":"2026-09-29","vendors":["MyPresta"]},"summary":"Unauthenticated attackers can write arbitrary files to the server via the feed.php endpoint, leading to remote code execution.","url":"https://insights.sbomify.com/CVE-2026-85520/"}