What’s Vulnerable › Vulnerabilities

CVE-2020-5519

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-01-06 · updated 2026-06-17
• Weakness: CWE-20

Description

The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by the "Server Configuration > External App" screen.

Affected products

• LiteSpeed Technologies OpenLiteSpeed: before 1.6.5 — fixed in 1.6.5

How to fix

Upgrade to a fixed version: LiteSpeed Technologies OpenLiteSpeed 1.6.5. Check the vendor advisory for mitigations.

References

• https://drive.google.com/open?id=1pSciFEfjHp3kN8y5shy_zosJo7dje_fX
• https://forum.openlitespeed.org/threads/openlitespeed-v1-6-5-now-available.4047/
• https://drive.google.com/open?id=1pSciFEfjHp3kN8y5shy_zosJo7dje_fX
• https://forum.openlitespeed.org/threads/openlitespeed-v1-6-5-now-available.4047/

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