{"answers":{"affected":"2 open source packages ship an affected version, including showdown.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59710 exists.","fix":"Apply the vendor's patch.","what":"CVE-2026-59710 is a medium-severity cross-site scripting vulnerability in showdown, published on 6 Jul 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-2026-59710 and fix it if it is affected.\n\nWhat it is: CVE-2026-59710 is a medium-severity cross-site scripting vulnerability in showdown, published on 6 Jul 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59710 exists.\n\nAffected packages and fixed versions:\n- showdown (npm): affected all versions up to 2.1.0; no fix listed\n- showdown (npm): affected all versions up to 2.1.0; no fix listed\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-2026-59710/ (Markdown: https://insights.sbomify.com/CVE-2026-59710/index.md)","id":"CVE-2026-59710","markdown":"https://insights.sbomify.com/CVE-2026-59710/index.md","name":"CVE-2026-59710","record":{"aliases":["GHSA-22g5-r2x5-97cx","MINI-2fhh-8m2v-f3vv","MINI-4rmr-2742-mpf5","MINI-h37w-3g9v-9g8q","MINI-qm85-wcc2-329m","MINI-rcx3-rfv5-3223","MINI-vqgr-hvf3-jfmc"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Markdown parser library","requires_auth":"none","summary":"Attackers can inject malicious scripts via markdown table headers, leading to stored XSS when rendered with default settings.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"showdown contains a stored cross-site scripting vulnerability in the parseHeaders function of src/subParsers/makehtml/tables.js that fails to properly escape table header ID attributes. Attackers can inject arbitrary HTML and script-executing SVG elements through double-quote characters in markdown table headers, achieving stored XSS when untrusted markdown is rendered with the default github flavor configuration.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"showdown - Stored XSS via Unescaped Table Header ID Attribute Injection","id":"CVE-2026-59710","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"showdown - Cross-Site Scripting via Unescaped Metadata Title in completeHTMLDocument","id":"CVE-2026-59711"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.1.0"],"package":"showdown","purl":null,"source":"GHSA-22g5-r2x5-97cx"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["2.1.0"],"package":"showdown","purl":"pkg:npm/showdown","source":"GHSA-22g5-r2x5-97cx"}],"prev":{"headline":"Ghostfolio - Unauthorized Portfolio Holding Tag Modification via Missing Permission Check","id":"CVE-2026-59709"},"products":["showdown"],"published":"2026-07-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-07","vendors":["showdown"]},"summary":"Attackers can inject malicious scripts via markdown table headers, leading to stored XSS when rendered with default settings.","url":"https://insights.sbomify.com/CVE-2026-59710/"}