What’s Vulnerable › Vulnerabilities

CVE-2021-40940

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-06-15 · updated 2026-06-17
• Weakness: CWE-434

Description

Monstra 3.0.4 does not filter the case of php, which leads to an unrestricted file upload vulnerability.

Affected products

• Monstra: through 3.0.4

References

• https://github.com/monstra-cms/monstra/issues/471
• https://github.com/monstra-cms/monstra/issues/471

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