{"answers":{"affected":"1 open source package ship an affected version, including html_sanitize_ex. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-68750 in the wild and no public exploit code.","fix":"Upgrade html_sanitize_ex to a fixed version for your release line: 1.4.5 or 1.5.3.","what":"CVE-2026-68750 is a high-severity denial of service vulnerability in rrrene html_sanitize_ex, published on 6 Aug 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-2026-68750 and fix it if it is affected.\n\nWhat it is: CVE-2026-68750 is a high-severity denial of service vulnerability in rrrene html_sanitize_ex, published on 6 Aug 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-2026-68750 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- html_sanitize_ex (Hex): affected from 0.3.1; fixed in 1.4.5, 1.5.3\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-2026-68750/ (Markdown: https://insights.sbomify.com/CVE-2026-68750/index.md)","id":"CVE-2026-68750","markdown":"https://insights.sbomify.com/CVE-2026-68750/index.md","name":"CVE-2026-68750","record":{"aliases":["EEF-CVE-2026-68750","GHSA-463q-p2fr-mh9p","GHSA-684p-mhw3-3cwq"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Elixir HTML sanitizer","requires_auth":"none","summary":"An unauthenticated attacker can cause CPU exhaustion and denial of service by submitting HTML with many sibling elements to the html_sanitize_ex library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[{"product":"htmlsanitizeex","vendor":"rrrene"}],"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-407","name":"Inefficient Algorithmic Complexity"}],"description":"Inefficient Algorithmic Complexity vulnerability in the traversal engine in rrrene html_sanitize_ex allows an unauthenticated remote attacker to exhaust server CPU and memory via a flat run of sibling elements in sanitized HTML. The list clause of HtmlSanitizeEx.Traverser.traverse/2 recurses on the tail of a sibling list and then evaluates List.flatten([head] ++ tail) over the already flattened result, so every one of n siblings copies and re-walks the entire remaining tail. The flattening is only needed for the rare case where scrub returns several replacement nodes for one node, but the cost is paid across the whole tail at every step, making traversal quadratic in sibling count.\n\nThe traverser sits on every public entry point, so no particular scrubber or configuration is required and the payload needs only allowed tags. A 160 KB body of 20,000 sibling elements occupies a scheduler for roughly 1.7 seconds, and the cost grows faster than the body does.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.4.5 and from 1.5.0-rc.0 before 1.5.3.","ecosystems":["Hex"],"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":"Quadratic sibling re-flattening in the html_sanitize_ex traversal engine allows CPU-exhaustion denial of service","id":"CVE-2026-68750","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":1,"n_references":5,"next":{"headline":"Project Resource Managers may escalate privileges in JFrog Artifactory","id":"CVE-2026-68752"},"packages":[{"ecosystem":"Hex","fixed":["1.4.5","1.5.3"],"introduced":["0.3.1","1.5.0-rc.0"],"last_affected":[],"package":"html_sanitize_ex","purl":"pkg:hex/html_sanitize_ex","source":"EEF-CVE-2026-68750"}],"prev":{"headline":"Quadratic regex backtracking in the html_sanitize_ex CSS scrubber allows CPU-exhaustion denial of service","id":"CVE-2026-68749"},"products":["html_sanitize_ex"],"published":"2026-08-06","related":[{"cvss_score":8.2,"headline":"Quadratic regex backtracking in the html_sanitize_ex CSS scrubber allows CPU-exhaustion denial of service","id":"CVE-2026-68749","kev_date_added":null,"published":"2026-08-06"},{"cvss_score":4.8,"headline":"html_sanitize_ex HTML5 scrubber keeps attacker-supplied form-association attributes, allowing form hijacking","id":"CVE-2026-66370","kev_date_added":null,"published":"2026-08-06"},{"cvss_score":2.3,"headline":"html_sanitize_ex HTML5 scrubber keeps attacker-supplied meta refresh, allowing forced cross-origin redirection","id":"CVE-2026-66829","kev_date_added":null,"published":"2026-08-06"},{"cvss_score":2.3,"headline":"html_sanitize_ex HTML5 scrubber keeps attacker-supplied `\u003cobject\u003e` elements, allowing untrusted content embedding","id":"CVE-2026-66843","kev_date_added":null,"published":"2026-08-06"},{"cvss_score":2.3,"headline":"CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input","id":"CVE-2026-68747","kev_date_added":null,"published":"2026-08-06"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Erlang Ecosystem Foundation","prefix":"EEF"},{"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":"2026-08-19","vendors":["rrrene"]},"summary":"An unauthenticated attacker can cause CPU exhaustion and denial of service by submitting HTML with many sibling elements to the html_sanitize_ex library.","url":"https://insights.sbomify.com/CVE-2026-68750/"}