WordPress plugin
LiteSpeed Cache security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 30 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical1
- High10
- Medium19
- Low0
All LiteSpeed Cache vulnerabilities
- High8.2Unauthenticated Sensitive Information Disclosure (WooCommerce Store API Cart/Checkout PII + Cart-Token) via Public REST Caching
≤7.9.1Update to 7.9.2
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting via VPI Image Attribute Re-Serialization
≤7.9.1Update to 7.9.2
- Medium5.4Unauthenticated Stored Cross-Site Scripting via HTML Minifier Predictable Placeholder (md5(REQUEST_TIME) + two-pass str_replace)
≤7.9.1Update to 7.9.2
- High7.2Unauthenticated Stored Cross-Site Scripting
<7.9.2Update to 7.9.2
- High7.2Unauthenticated Stored Cross-Site Scripting
<7.9.2Update to 7.9.2
- Medium4.3Missing Authorization
<7.9.2Update to 7.9.2
- Medium5.3Unauthenticated Information Exposure
≤7.9Update to 7.9.1
- Medium4.7Reflected Cross-Site Scripting via ESI 'esi' Parameter
≤7.9Update to 7.9.1
- High7.2Unauthenticated Server-Side Request Forgery
≤7.9Update to 7.9.1
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment Content
≤7.8.1Update to 7.9
- Medium6.4Authenticated (Author+) Stored Cross-Site Scripting via img Tag Attributes
≤7.7Update to 7.8
- High7.2Unauthenticated Stored Cross-Site Scripting via QUIC.cloud CCSS/UCSS REST API Endpoints
≤7.7Update to 7.8
- Medium6.1Reflected Cross-Site Scripting
≤7.5.0.1Update to 7.6
- Medium5.5Authenticated (Editor+) Server-Side Request Forgery
≤7.0.1Update to 7.1
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤6.5.2Update to 6.5.3
- High8.1Unauthenticated Privilege Escalation
≤6.5.1Update to 6.5.2
- High7.2Unauthenticated Stored Cross-Site Scripting
≤6.5.0.2Update to 6.5.1
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤6.5.0.2Update to 6.5.1
- Medium4.3Authenticated (Author+) Path Traversal
≤6.4.1Update to 6.5.1
- Medium5.5Authenticated (Administrator+) Stored Cross-Site Scripting
≤6.4.1Update to 6.5
- High7.5Unauthenticated Sensitive Information Exposure via Log Files
≤6.4.1Update to 6.5.0.1
- Critical9.8Unauthenticated Privilege Escalation
≤6.3.0.1Update to 6.4
- Medium6.1Cross-Site Request Forgery to Stored Cross-Site Scripting
≤6.2.0.1Update to 6.3
- High7.2Unauthenticated Stored Cross-Site Scripting via 'nameservers' and '_msg'
≤5.7Update to 5.7.0.1
- Medium5.3Missing Authorization via update_cdn_status
≤5.7Update to 5.7.0.1
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
≤5.6Update to 5.7
- Medium4.3Missing Authorization to Toggle Crawler State
≤5.3Update to 5.3.1
- Medium6.1Reflected Cross-Site Scripting via qc_res
1.0.15 – 4.4.3Update to 4.4.4
- Medium6.5Authorization Bypass
1.0.15 – 4.4.3Update to 4.4.4
- Medium5.5Authenticated Stored Cross-Site Scripting via IP setting
≤3.6Update to 3.6.1
LiteSpeed Cache: common questions
Does LiteSpeed Cache have known vulnerabilities?
Yes. VulnCrest Radar lists 30 known vulnerabilities in LiteSpeed Cache: 1 critical, 10 high, 19 medium. None are known to affect version null.
How do I check which version of LiteSpeed Cache I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent LiteSpeed Cache vulnerability?
CVE-2026-93389, published Nov 4, 2026: LiteSpeed Cache <= 7.9.1 - Unauthenticated Sensitive Information Disclosure (WooCommerce Store API Cart/Checkout PII + Cart-Token) via Public REST Caching. Severity: High (CVSS 8.2).
Is any LiteSpeed Cache vulnerability listed in CISA KEV?
No. None of the known LiteSpeed Cache vulnerabilities is currently listed in the CISA KEV catalog.