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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 2 LOW 0

Signals Exploited in the wild (KEV) 0 Patch available 0 No fix listed 2 Has CVE 2

Fix status Fixed 0 Partial 0 Will not fix 0 Deferred 2 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 0 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 2 SQL injection 0

Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 2 No user interaction 0

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Weakness (CWE) CWE-79 Improper Neutralization of Input During Web Page Generation 2

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TI-2026-42583 CVE-2026-59710 · GHSA-22g5-r2x5-97cx

showdown - Stored XSS via Unescaped Table Header ID Attribute Injection

Priority MEDIUM 57

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.

CVSS 4.0MEDIUM 5.3· Network · No auth · User interaction · EPSS 0.00338 · Published 2026-07-06 · Fix deferred CWE-79

TI-2026-42584 CVE-2026-59711 · GHSA-cr32-g25g-vxjj

showdown - Cross-Site Scripting via Unescaped Metadata Title in completeHTMLDocument

Priority MEDIUM 57

showdown contains a cross-site scripting vulnerability in metadata title handling that allows attackers to inject arbitrary HTML and JavaScript.

CVSS 4.0MEDIUM 5.3· Network · No auth · User interaction · EPSS 0.0023 · Published 2026-07-06 · Fix deferred CWE-79

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