What’s Vulnerable › Vulnerabilities

CVE-2023-27757

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-15 · updated 2026-06-17
• Weakness: CWE-434

Description

An arbitrary file upload vulnerability in the /admin/user/uploadImg component of PerfreeBlog v3.1.1 allows attackers to execute arbitrary code via a crafted JPG file.

Affected products

• PerfreeBlog: 3.1.1

References

• https://github.com/perfree/PerfreeBlog/issues/13
• https://github.com/perfree/PerfreeBlog/issues/13

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