{"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-2026-68747 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 1.5.4.","what":"CVE-2026-68747 is a low-severity cross-site scripting vulnerability in rrrene html_sanitize_ex, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-68747 and fix it if it is affected.\n\nWhat it is: CVE-2026-68747 is a low-severity cross-site scripting vulnerability in rrrene html_sanitize_ex, published on 6 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-68747 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, 1.5.4\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-2026-68747/ (Markdown: https://insights.sbomify.com/CVE-2026-68747/index.md)","id":"CVE-2026-68747","markdown":"https://insights.sbomify.com/CVE-2026-68747/index.md","name":"CVE-2026-68747","record":{"aliases":["EEF-CVE-2026-68747","GHSA-87v2-pfhj-r5x7","GHSA-g72r-5wgp-6532"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Elixir HTML sanitizer","requires_auth":"none","summary":"An attacker can inject malicious CSS at-rules, such as remote imports, bypassing the allowlist in the html_sanitize_ex library.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[{"product":"htmlsanitizeex","vendor":"rrrene"}],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote stylesheet, into a page served to other users. HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output unchanged. @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.\n\nElement boundaries are resolved before the scrubber runs, so injected content does not escape the \u003cstyle\u003e element and no script executes.\n\nThis issue affects html_sanitize_ex: from 0.3.1 before 1.4.5 and from 1.5.0-rc.0 before 1.5.4.","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":"CSS sanitizer allowlist bypass in html_sanitize_ex via non-declaration input","id":"CVE-2026-68747","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":1,"n_references":5,"next":{"headline":"Quadratic regex backtracking in the html_sanitize_ex CSS scrubber allows CPU-exhaustion denial of service","id":"CVE-2026-68749"},"packages":[{"ecosystem":"Hex","fixed":["1.4.5","1.5.4"],"introduced":["0.3.1","1.5.0-rc.0"],"last_affected":[],"package":"html_sanitize_ex","purl":"pkg:hex/html_sanitize_ex","source":"EEF-CVE-2026-68747"}],"prev":{"headline":"Livebook Teams identity check fails open when the deployment group is unresolvable, allowing unauthenticated access","id":"CVE-2026-68746"},"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":8.2,"headline":"Quadratic sibling re-flattening in the html_sanitize_ex traversal engine allows CPU-exhaustion denial of service","id":"CVE-2026-68750","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"}],"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 attacker can inject malicious CSS at-rules, such as remote imports, bypassing the allowlist in the html_sanitize_ex library.","url":"https://insights.sbomify.com/CVE-2026-68747/"}