{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-27633 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-27633 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-27633 is a high-severity denial of service vulnerability in maximmasiutin TinyWeb, published on 25 Feb 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-2026-27633 and fix it if it is affected.\n\nWhat it is: CVE-2026-27633 is a high-severity denial of service vulnerability in maximmasiutin TinyWeb, published on 25 Feb 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-2026-27633 in the wild and no public exploit code.\n\nAffected product: maximmasiutin TinyWeb. 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-2026-27633/ (Markdown: https://insights.sbomify.com/CVE-2026-27633/index.md)","id":"CVE-2026-27633","markdown":"https://insights.sbomify.com/CVE-2026-27633/index.md","name":"CVE-2026-27633","record":{"aliases":["GHSA-992w-gmcm-fmgr"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"TinyWeb web server","requires_auth":"none","summary":"Unauthenticated attackers can crash the TinyWeb server by sending HTTP requests with excessively large Content-Length headers, causing memory exhaustion.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"tinyweb","vendor":"ritlabs"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"TinyWeb is a web server (HTTP, HTTPS) written in Delphi for Win32. Versions prior to version 2.02 have a Denial of Service (DoS) vulnerability via memory exhaustion. Unauthenticated remote attackers can send an HTTP POST request to the server with an exceptionally large `Content-Length` header (e.g., `2147483647`). The server continuously allocates memory for the request body (`EntityBody`) while streaming the payload without enforcing any maximum limit, leading to all available memory being consumed and causing the server to crash. Anyone hosting services using TinyWeb is impacted. Version 2.02 fixes the issue. The patch introduces a `CMaxEntityBodySize` limit (set to 10MB) for the maximum size of accepted payloads. As a temporary workaround if upgrading is not immediately possible, consider placing the server behind a Web Application Firewall (WAF) or reverse proxy (like nginx or Cloudflare) configured to explicitly limit the maximum allowed HTTP request body size (e.g., `client_max_body_size` in nginx).","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"TinyWeb has Unbounded Content-Length Memory Exhaustion (DoS)","id":"CVE-2026-27633","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Piwigo: Pre-auth SQL injection via date filter parameters in ws_std_image_sql_filter","id":"CVE-2026-27634"},"packages":[],"prev":{"headline":"Talishar Vulnerable to Cross-Site Request Forgery (CSRF)","id":"CVE-2026-27632"},"products":["TinyWeb"],"published":"2026-02-25","related":[{"cvss_score":10,"headline":"CGI Parameter Injection (Bypass of STRICT_CGI_PARAMS and EscapeShellParam)","id":"CVE-2026-27613","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":10,"headline":"TinyWeb CGI Command Injection","id":"CVE-2026-22781","kev_date_added":null,"published":"2026-01-12"},{"cvss_score":9.3,"headline":"TinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling)","id":"CVE-2026-28497","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":9.2,"headline":"TinyWeb: HTTP Header Control Character Injection into CGI Environment","id":"CVE-2026-29046","kev_date_added":null,"published":"2026-03-06"},{"cvss_score":8.7,"headline":"TinyWeb vulnerable to Remote Denial of Service via Thread/Connection Exhaustion (Slowloris)","id":"CVE-2026-27630","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":8.6,"headline":"Denial of service in n/a","id":"CVE-2024-34199","kev_date_added":null,"published":"2024-05-10"}],"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":"2026-02-26","vendors":["maximmasiutin"]},"summary":"Unauthenticated attackers can crash the TinyWeb server by sending HTTP requests with excessively large Content-Length headers, causing memory exhaustion.","url":"https://insights.sbomify.com/CVE-2026-27633/"}