{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-66754 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-66754 is a high-severity denial of service vulnerability in tomaka rouille, published on 28 Jul 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-2026-66754 and fix it if it is affected.\n\nWhat it is: CVE-2026-66754 is a high-severity denial of service vulnerability in tomaka rouille, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-66754 exists.\n\nAffected product: tomaka rouille. 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-2026-66754/ (Markdown: https://insights.sbomify.com/CVE-2026-66754/index.md)","id":"CVE-2026-66754","markdown":"https://insights.sbomify.com/CVE-2026-66754/index.md","name":"CVE-2026-66754","record":{"aliases":["DEBIAN-CVE-2026-66754","GHSA-mrg5-7f6c-r28q"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust web framework","requires_auth":"none","summary":"Remote attackers can crash the server by sending crafted percent-encoded URLs that trigger a reachable assertion failure in the Rouille library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"Rouille 0.1.6 through 3.6.2 contains a reachable assertion vulnerability in the Request::remove_prefix function that allows remote unauthenticated attackers to crash the server by sending a crafted percent-encoded URL. Attackers can send a request whose decoded path matches a configured prefix while the raw percent-encoded path does not, causing the assert! to fail and triggering either a 500 error or full process termination depending on the panic configuration.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-07-26","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-07-26T17:25:04Z","kind":"github_poc","ref":"https://github.com/theopaid/CVE-2026-66754-Remote-Denial-of-Service-via-Reachable-Assertion-in-URL-Prefix-Handling-rouille-","stars":0,"title":"Security Advisory: Remote Denial of Service via Reachable Assertion in URL Prefix Handling (rouille)"}],"tier":"weaponised"},"has_fix":true,"headline":"Rouille 0.1.6 - 3.6.2 Reachable Assertion DoS via remove_prefix percent-encoding","id":"CVE-2026-66754","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Apache Tika: Arbitrary Local File Read in ISArchiveParser","id":"CVE-2026-66755"},"packages":[],"prev":{"headline":"tiny-http 0.12.0 HTTP Response Splitting via Header Injection","id":"CVE-2026-66753"},"products":["rouille"],"published":"2026-07-28","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-29","vendors":["tomaka"]},"summary":"Remote attackers can crash the server by sending crafted percent-encoded URLs that trigger a reachable assertion failure in the Rouille library.","url":"https://insights.sbomify.com/CVE-2026-66754/"}