{"answers":{"affected":"3 open source packages ship an affected version, including github.com/yuin/goldmark/renderer/html and github.com/yuin/goldmark. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-5160 in the wild and no public exploit code.","fix":"Upgrade github.com/yuin/goldmark/renderer/html to 1.7.17 or later.","what":"CVE-2026-5160 is a medium-severity cross-site scripting vulnerability in github.com/yuin/goldmark/renderer/html, published on 15 Apr 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-2026-5160 and fix it if it is affected.\n\nWhat it is: CVE-2026-5160 is a medium-severity cross-site scripting vulnerability in github.com/yuin/goldmark/renderer/html, published on 15 Apr 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-2026-5160 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/yuin/goldmark/renderer/html (Go): affected all versions; fixed in 1.7.17\n- github.com/yuin/goldmark/renderer/html (Go): affected all versions; fixed in 1.7.17\n- github.com/yuin/goldmark (Go): affected all versions; fixed in 1.7.17\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-2026-5160/ (Markdown: https://insights.sbomify.com/CVE-2026-5160/index.md)","id":"CVE-2026-5160","markdown":"https://insights.sbomify.com/CVE-2026-5160/index.md","name":"CVE-2026-5160","record":{"aliases":["AZL-83048","AZL-83060","BELL-CVE-2026-5160","CLEANSTART-2026-QG09964","DEBIAN-CVE-2026-5160","GHSA-c97m-vxhj-p7j6","GO-2026-5320","MINI-2376-5fmm-pr7g","MINI-3fhq-f3q9-456q","MINI-5686-gjr7-pqg2","MINI-5767-h34w-c9ph","MINI-62j8-5c44-g8rj","MINI-7jm8-9258-2xjx","MINI-887v-j6w5-q6ph","MINI-985v-3x7g-p93f","MINI-9ffc-q9c8-gr2r","MINI-r6rv-q8vr-g5mv","MINI-v9c9-rpfh-67q7","MINI-vrmg-3hjr-rh82","MINI-x2w5-6698-wmcc","MINI-x8rj-77fm-wxj6","UBUNTU-CVE-2026-5160"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Go Markdown library","requires_auth":"none","summary":"An attacker can execute arbitrary scripts by bypassing URL validation in the goldmark HTML renderer, affecting applications using this Go library.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"snyk","cpe":[{"product":"goldmark","vendor":"yuin"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/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":"Versions of the package github.com/yuin/goldmark/renderer/html before 1.7.17 are vulnerable to Cross-site Scripting (XSS) due to improper ordering of URL validation and normalization. The renderer validates link destinations using a prefix-based check (IsDangerousURL) before resolving HTML entities. This allows an attacker to bypass protocol filtering by encoding dangerous schemes using HTML5 named character references. For example, a payload such as javascript\u0026colon;alert(1) is not recognized as dangerous during validation, leading to arbitrary script execution in the context of applications that render the URL.","ecosystems":["Go"],"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":"goldmark vulnerable to Cross-site Scripting (XSS)","id":"CVE-2026-5160","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Improper Authentication in TUBITAK BILGEM's Pardus About","id":"CVE-2026-5161"},"packages":[{"ecosystem":"Go","fixed":["1.7.17"],"introduced":["0"],"last_affected":[],"package":"github.com/yuin/goldmark","purl":"pkg:golang/github.com/yuin/goldmark","source":"GO-2026-5320"},{"ecosystem":"Go","fixed":["1.7.17"],"introduced":["0"],"last_affected":[],"package":"github.com/yuin/goldmark/renderer/html","purl":null,"source":"GHSA-c97m-vxhj-p7j6"},{"ecosystem":"Go","fixed":["1.7.17"],"introduced":["0"],"last_affected":[],"package":"github.com/yuin/goldmark/renderer/html","purl":"pkg:golang/github.com/yuin/goldmark/renderer/html","source":"GHSA-c97m-vxhj-p7j6"}],"prev":{"headline":"Cross-site scripting in Royal Addons for Elementor – Addons and Templates Kit for Elementor","id":"CVE-2026-5159"},"products":["github.com/yuin/goldmark/renderer/html"],"published":"2026-04-15","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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-04-15","vendors":["n/a"]},"summary":"An attacker can execute arbitrary scripts by bypassing URL validation in the goldmark HTML renderer, affecting applications using this Go library.","url":"https://insights.sbomify.com/CVE-2026-5160/"}