{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-93894 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-93894 is a low-severity memory corruption vulnerability in Varnish-Software Varnish Cache, published on 18 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-93894 and fix it if it is affected.\n\nWhat it is: CVE-2026-93894 is a low-severity memory corruption vulnerability in Varnish-Software Varnish Cache, published on 18 Sep 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-2026-93894 in the wild and no public exploit code.\n\nAffected product: Varnish-Software Varnish Cache. 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-2026-93894/ (Markdown: https://insights.sbomify.com/CVE-2026-93894/index.md)","id":"CVE-2026-93894","markdown":"https://insights.sbomify.com/CVE-2026-93894/index.md","name":"CVE-2026-93894","record":{"aliases":["DEBIAN-CVE-2026-93894","GHSA-pfj3-384h-g8q8","UBUNTU-CVE-2026-93894"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Varnish Cache","requires_auth":"low_privilege","summary":"A buffer overflow in VCL string methods allows remote attackers to cause a denial of service by crashing the child process.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/AU:N/R:A/V:D/RE:L/U:Clear","version":"4.0"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"In Vinyl Cache before 9.0,2, workspace buffer overflow vulnerability was found in the .upper() and .lower() string type methods of VCL. This can be used as a remote denial of service (DoS) vector to make the child process segfault or assert, and then restart. Effectively exploiting this vulnerability requires prior knowledge about the VCL in use and the ability to craft a request that contains a string that is long enough to fill the remaining workspace at the call site while staying under the different request size limits (http_req_size, http_req_hdr_len, etc.).","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Memory corruption in Varnish Cache","id":"CVE-2026-93894","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"IBM WebSphere Application Server Liberty Improper Access Control","id":"CVE-2026-93895"},"packages":[],"prev":{"headline":"Security Vulnerability identified in IBM TRIRIGA - Information Disclosure in Admin Console","id":"CVE-2026-93892"},"products":["Varnish Cache","Vinyl Cache"],"published":"2026-09-18","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":"partial"},"state":"PUBLISHED","updated":"2026-09-19","vendors":["Varnish-Software","Vinyl-Cache"]},"summary":"A buffer overflow in VCL string methods allows remote attackers to cause a denial of service by crashing the child process.","url":"https://insights.sbomify.com/CVE-2026-93894/"}