{"apiVersion":"1.0","identifier":"CVE-2026-5389","description":"justhtml versions before 1.13.0 contain a cross-site scripting vulnerability in the to_markdown() function when serializing attacker-controlled pre content. Attackers can place backticks inside sanitized pre elements to break out of fixed-length code fences, allowing raw HTML to execute when the generated Markdown is rendered by CommonMark or GFM-style renderers.","publishedAt":"2026-08-23T14:16:53","lastModifiedAt":"2026-08-26T17:10:53","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-5389","cvssScore":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","epssProbability":0.00188,"riskScore":0.62,"affectedProduct":"justhtml","affectedVersions":"<1.13.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-5389","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-5389","en":"https://www.redsauce.net/en/cves/CVE-2026-5389","fr":"https://www.redsauce.net/fr/cves/CVE-2026-5389","pt":"https://www.redsauce.net/pt/cves/CVE-2026-5389","de":"https://www.redsauce.net/de/cves/CVE-2026-5389","sk":"https://www.redsauce.net/sk/cves/CVE-2026-5389","el":"https://www.redsauce.net/el/cves/CVE-2026-5389"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-5389"}}