{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-100389 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-100389 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-100389 is a critical vulnerability in GestSup, published on 25 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-2026-100389 and fix it if it is affected.\n\nWhat it is: CVE-2026-100389 is a critical vulnerability in GestSup, published on 25 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-2026-100389 in the wild and no public exploit code.\n\nAffected product: GestSup. 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-2026-100389/ (Markdown: https://insights.sbomify.com/CVE-2026-100389/index.md)","id":"CVE-2026-100389","markdown":"https://insights.sbomify.com/CVE-2026-100389/index.md","name":"CVE-2026-100389","record":{"aliases":["GHSA-3p62-2wp9-6rpj"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"GestSup helpdesk","requires_auth":"none","summary":"Unauthenticated attackers can achieve remote code execution by sending emails with PHP attachments to monitored mailboxes in GestSup.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"GestSup versions before 3.2.62 contain a remote code execution vulnerability in the basic IMAP connector's attachment handling that fails to skip blocked file extensions. Unauthenticated attackers can send emails with PHP attachments to monitored mailboxes, which are written to the web-accessible upload/ticket directory and executed when accessed.","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":"GestSup before 3.2.62 Remote Code Execution via IMAP Attachment","id":"CVE-2026-100389","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"file_upload","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Zoraxy 3.2.3 through 3.3.4 Client IP Spoofing via X-Forwarded-For IPv6","id":"CVE-2026-100390"},"packages":[],"prev":{"headline":"RustDesk before 1.5.0 Missing Authorization Check on Incoming File Clipboard Messages","id":"CVE-2026-100388"},"products":["GestSup"],"published":"2026-09-25","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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-30","vendors":["GestSup"]},"summary":"Unauthenticated attackers can achieve remote code execution by sending emails with PHP attachments to monitored mailboxes in GestSup.","url":"https://insights.sbomify.com/CVE-2026-100389/"}