Vulnerability Intelligence Report
Improper handling of JavaScript whitespace in html/template
CVE-2023-24540
Not all valid JavaScript whitespace characters are considered to be whitespace. Templates containing whitespace characters outside of the character set "\t\n\f\r\u0020\u2028\u2029" in JavaScript contexts that also contain actions may not be properly sanitized during execution.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:1.55%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-74 ↗CWE-74: Improper input validation
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Go standard library | html/template | 0 < 1.19.9 (affected), 1.20.0-0 < 1.20.4 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.548%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Go Project · Vendor · USA |
| Reserved | 2023-01-25T21:19:20 |
| Published | 2023-05-11T15:29:31 |
| Last Updated | 2025-01-24T16:45:07 |
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