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CVE-2021-47903: Improper Neutralization of Special Elements used in an OS Command

🗓️ 23 Jan 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Authenticated RCE in LiteSpeed Web Server Enterprise 5.4.11 via Command parameter injection.

Related
Refs
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attackerkb
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23 Jan 202616:47
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23 Jan 202600:00
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23 Jan 202616:47
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23 Jan 202616:47
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23 Jan 202616:47
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23 Jan 202617:16
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ptsecurity
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PT-2026-4516
23 Jan 202600:00
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vulnrichment
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CVE-2021-47903 LiteSpeed Web Server Enterprise 5.4.11 - Command Injection
23 Jan 202616:47
vulnrichment

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15 Apr 2026 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 48.6
CVSS 3.18.8
EPSS0.01648
SSVC
0