{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-20240 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-20240 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-20240 is a high-severity denial of service vulnerability in Splunk Splunk, published on 20 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-20240 and fix it if it is affected.\n\nWhat it is: CVE-2026-20240 is a high-severity denial of service vulnerability in Splunk Splunk, published on 20 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-20240 in the wild and no public exploit code.\n\nAffected product: Splunk Splunk. 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-2026-20240/ (Markdown: https://insights.sbomify.com/CVE-2026-20240/index.md)","id":"CVE-2026-20240","markdown":"https://insights.sbomify.com/CVE-2026-20240/index.md","name":"CVE-2026-20240","record":{"aliases":["GHSA-2fmj-cw46-4vrm"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Splunk Enterprise","requires_auth":"low_privilege","summary":"A low-privileged user can cause denial of service in Splunk Enterprise by exploiting missing input validation in a script to rename critical directories.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"cisco","cpe":[{"product":"splunk","vendor":"splunk"},{"product":"splunk_cloud_platform","vendor":"splunk"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.11, and 9.3.12, and Splunk Cloud Platform versions below 10.4.2603.1, 10.3.2512.9, 10.2.2510.11, 10.1.2507.21, 10.0.2503.13, and 9.3.2411.129, a low-privileged user that does not hold the ‘admin’ or ‘power’ Splunk roles could cause a Denial of Service by exploiting the `coldToFrozen.sh` script in the `splunk_archiver` app to rename critical Splunk directories, making the instance non-functional.\u003cbr\u003e\u003cbr\u003eThe Denial of Service is possible because of missing input validation in the `coldToFrozen.sh` script, which accepts arbitrary file paths and renames them without restricting operations to safe directories.","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":"Denial of Service through coldToFrozen.sh Script in Splunk Enterprise","id":"CVE-2026-20240","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"splunk:splunk","products":["splunk:splunk","splunk:splunk_cloud_platform"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Cisco Secure Firewall Management Center Software Java Deserialization Remote Code Execution Vulnerability","id":"CVE-2026-20242"},"packages":[],"prev":{"headline":"Sensitive Information Disclosure through Log Files in Splunk Enterprise","id":"CVE-2026-20239"},"products":["Splunk Cloud Platform","Splunk Enterprise"],"published":"2026-05-20","related":[{"cvss_score":9.8,"headline":"Splunk Enterprise Missing Authentication for Critical Function","id":"CVE-2026-20253","kev_date_added":"2026-06-18","published":"2026-06-10"},{"cvss_score":9.8,"headline":"Missing Authentication for Critical Function in the Patroni REST API in Splunk Enterprise","id":"CVE-2026-76268","kev_date_added":null,"published":"2026-10-07"},{"cvss_score":9.8,"headline":"Improper Neutralization in Splunk Enterprise","id":"CVE-2026-76284","kev_date_added":null,"published":"2026-10-07"},{"cvss_score":9.8,"headline":"Improper Adherence to Coding Standards in Splunk Enterprise","id":"CVE-2026-76285","kev_date_added":null,"published":"2026-10-07"},{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2017-17067","kev_date_added":null,"published":"2017-11-30"},{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2016-10126","kev_date_added":null,"published":"2017-01-10"},{"cvss_score":9.4,"headline":"Improper Access Control through Embedded Report REST API Requests in Splunk Enterprise","id":"CVE-2026-76310","kev_date_added":null,"published":"2026-08-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-05-20","vendors":["Splunk"]},"summary":"A low-privileged user can cause denial of service in Splunk Enterprise by exploiting missing input validation in a script to rename critical directories.","url":"https://insights.sbomify.com/CVE-2026-20240/"}