CVE-2026-11437

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 34.8% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-07-23.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-06 16:30Z4 MO AGO

Last updated

2026-06-08 13:13Z4 MO AGO

Reserved

2026-06-05

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-918Server-Side Request Forgery (SSRF)Base

Data version

5.2

Document digest

da4291cc31846bceb63a0c1b8397e08feea2eb115d191e093527245163772225

• vuldb.comVDB-369017 | perfree go-fastdfs-web Installation Endpoint checkServer server-side request forgeryhttps://vuldb.com/vuln/369017vdb-entrytechnical-description
• vuldb.comVDB-369017 | CTI Indicators (IOB, IOC, IOA)https://vuldb.com/vuln/369017/ctisignaturepermissions-required
• vuldb.comCVE-2026-11437 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-11437third-party-advisory
• vuldb.comSubmit #822726 | perfree go-fastdfs-web ≤1.3.7 Server-Side Request Forgeryhttps://vuldb.com/submit/822726third-party-advisory
• www.notion.sohttps://www.notion.so/Server-Side-Request-Forgery-SSRF-in-go-fastdfs-web-Installation-Endpoint-35aea92a3c41806485ffeeac7e18126aexploit