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CVE-2026-3375

The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the /wp-json/litespeed/v1/notify_ccss and /wp-json/litespeed/v1/notify_ucss REST API endpoints in all versions up to, and including, 7.7. These endpoints accept CSS content from QUIC.cloud callback notifications and store it to disk without sanitization. The stored content is later rendered inline frontend page loads without output escaping. The access control protecting these endpoints is IP-based validati
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9ede2b7c8d1bd645c1e813828804caf5fba38b40fbdf79b991511beac81716d0
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"LiteSpeed Cache","vendor":"litespeedtech","versions":[{"lessThanOrEqual":"7.7","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/problemTypes/0/descriptions/0

Source references

8 source assertions
{"url":"https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/cloud.cls.php#L2085"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/css.cls.php#L401"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/3
{"url":"https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/css.cls.php#L595"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/4
{"url":"https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/optimize.cls.php#L477"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/5
{"url":"https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/rest.cls.php#L108"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/litespeed-cache/trunk/src/router.cls.php#L732"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/6
{"url":"https://plugins.trac.wordpress.org/changeset/3473912/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/7
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/40fa29f5-525a-4986-91f9-0210a7594e46?source=cve"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e96b5b79865b8b79624c4f128d049a112d623a157e2c45174024591001cd55f2 · sha256:00b605e03149632a… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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