What’s Vulnerable › Vulnerabilities

CVE-2024-9440: Slim Select 2.0 createOption "text" XSS

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-10-02 · updated 2026-07-14
• Weakness: CWE-79

Description

Slim Select 2.0 versions through 2.9.0 are affected by a potential cross-site scripting vulnerability. In select.ts:createOption(), the text variable from the user-provided Options object is assigned to an innerHTML without sanitation. Software that depends on this library to dynamically generate lists using unsanitized user-provided input may be vulnerable to cross-site scripting, resulting in attacker executed JavaScript. At this time, no patch is available.

Affected products

• Slimselectjs Slim Select: before 2.9.2 — fixed in 2.9.2

How to fix

Upgrade to a fixed version: Slimselectjs Slim Select 2.9.2. Check the vendor advisory for mitigations.

References

• https://github.com/brianvoe/slim-select/blob/e7e37e2ff90e125f846bd98d6b8f278524ead79e/src/slim-select/select.ts#L377
• https://github.com/brianvoe/slim-select/issues/564
• https://vulncheck.com/advisories/slim-select-xss

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