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CVE-2018-15133 Laravel CVE debrief

CVE-2018-15133 is a Laravel Framework deserialization of untrusted data vulnerability that CISA placed in the Known Exploited Vulnerabilities (KEV) catalog on 2024-01-16. Because KEV inclusion indicates known exploitation, organizations using Laravel Framework should treat this as a high-priority remediation item and follow the vendor’s mitigation guidance. If mitigations are not available, CISA’s guidance is to discontinue use of the product.

Vendor
Laravel
Product
Laravel Framework
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2024-01-16
Original CVE updated
2024-01-16
Advisory published
2024-01-16
Advisory updated
2024-01-16

Who should care

Security teams, application owners, and platform teams running Laravel Framework in production, especially services that accept external input or are internet-facing.

Technical summary

The vulnerability is classified as deserialization of untrusted data in Laravel Framework. The supplied corpus does not include version ranges, exploit mechanics, or a CVSS score. The key operational signal is CISA KEV inclusion, which means the issue is known to be exploited and should be addressed using vendor mitigation guidance.

Defensive priority

High. CISA KEV listings are time-sensitive remediation items; CISA set a due date of 2024-02-06 for this entry.

Recommended defensive actions

  • Inventory all Laravel Framework deployments and identify any exposed applications or services.
  • Determine whether affected versions are present using vendor, CVE, and NVD guidance.
  • Apply vendor mitigations or upgrade using the official Laravel guidance referenced by CISA.
  • If mitigations are unavailable, discontinue use of the affected product per CISA guidance.
  • Prioritize remediation of internet-facing and externally reachable systems first.
  • Validate remediation and monitor for suspicious application behavior or compromise indicators.

Evidence notes

Evidence is limited to the CISA KEV entry and its linked official references. The source corpus states: vendorProject Laravel, product Laravel Framework, vulnerability name 'Laravel Deserialization of Untrusted Data Vulnerability,' dateAdded 2024-01-16, dueDate 2024-02-06, and required action to apply vendor mitigations or discontinue use if mitigations are unavailable. No CVSS score or exploit details were provided in the supplied corpus.

Official resources

This debrief is based on public, official sources available in the supplied corpus, primarily the CISA KEV entry added on 2024-01-16. It does not include exploit instructions or unpublished analysis.