{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54611 exists.","fix":"No fix has been published for CVE-2026-54611 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-54611 is a medium-severity vulnerability in instantsoft icms2, published on 8 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-54611 and fix it if it is affected.\n\nWhat it is: CVE-2026-54611 is a medium-severity vulnerability in instantsoft icms2, published on 8 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54611 exists.\n\nAffected product: instantsoft icms2. 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-2026-54611/ (Markdown: https://insights.sbomify.com/CVE-2026-54611/index.md)","id":"CVE-2026-54611","markdown":"https://insights.sbomify.com/CVE-2026-54611/index.md","name":"CVE-2026-54611","record":{"aliases":["GHSA-vvgv-h28h-p2m5"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"InstantCMS","requires_auth":"high_privilege","summary":"Authenticated attackers can achieve remote code execution in InstantCMS by uploading malicious components and custom .htaccess files to bypass execution restrictions.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"InstantCMS is a free and open source content management system. Versions prior to 2.18.2 have a Remote Code Execution (RCE) issue that allows remote authenticated attackers to execute any PHP code via the component installer. It is possible to upload a malicious component into the server, however, it won't be installed, but upload files will be executed. Normally all php files in upload folder are not executed, however, by uploading custom .htaccess it becomes possible. Version 2.18.2 contains a fix.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"InstantCMS has Remote Code Execution in package installer","id":"CVE-2026-54611","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":"Vvveb: Authenticated editor path traversal to PHP file write/RCE via data-v-save-global","id":"CVE-2026-54612"},"packages":[],"prev":{"headline":"QTINeon has unauthenticated relay-to-host amplification via unbounded RECONNECT_REQUEST forwarding","id":"CVE-2026-54609"},"products":["icms2"],"published":"2026-09-08","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-09","vendors":["instantsoft"]},"summary":"Authenticated attackers can achieve remote code execution in InstantCMS by uploading malicious components and custom .htaccess files to bypass execution restrictions.","url":"https://insights.sbomify.com/CVE-2026-54611/"}