Read the docs
TI-2026-09868 Aliases CVE-2026-11437GHSA-6g49-gvr8-2cj2

perfree go-fastdfs-web Installation Endpoint checkServer server-side request forgery

Priority HIGH 66CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A flaw has been found in perfree go-fastdfs-web up to 1.3.7. Affected is the function checkServer of the file /install/checkServer of the component Installation Endpoint. Executing a manipulation can lead to server-side request forgery. The attack can be executed remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00409 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
perfreego-fastdfs-web1.3.0; 1.3.1; 1.3.2; 1.3.3; 1.3.4; 1.3.5; 1.3.6; 1.3.7—No fix listedCNA
  • go-fastdfs-web Vendorperfree Affected 1.3.0; 1.3.1; 1.3.2; 1.3.3; 1.3.4; 1.3.5; 1.3.6; 1.3.7 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:perfree:go-fastdfs-web:*:*:*:*:*:*:*:*——perfree
  • cpe:2.3:a:perfree:go-fastdfs-web:*:*:*:*:*:*:*:* Versions — — ·perfree

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11437
  2. 2026-10-03 Alias added: GHSA-6g49-gvr8-2cj2

References

Exploit 1

  • TI-2025-21031 In PerfreeBlog version 4.0.11, regular users can exploit the arbitrary file upload… CVSS 3.1HIGH 8.8
  • TI-2025-21072 PerfreeBlog v4.0.11 has a directory traversal vulnerability in the getThemeFilesByName function. CVSS 3.1HIGH 7.5
  • TI-2023-21565 An issue in Perfree PerfreeBlog v.3.1.2 allows a remote attacker to execute arbitrary… CVSS 3.1HIGH 7.2
  • TI-2025-37803 PerfreeBlog v4.0.11 has a File Upload vulnerability in the installPlugin function CVSS 3.1HIGH 7.6
  • TI-2025-37802 PerfreeBlog v4.0.11 has a File Upload vulnerability in the installTheme function CVSS 3.1HIGH 7.6
  • TI-2025-37801 PerfreeBlog v4.0.11 has an arbitrary file deletion vulnerability in the unInstallTheme function CVSS 3.1HIGH 7.6
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences