CVE-2026-86240Public exploitNetwork attack vector

Internal service access via incomplete IP filtering

Published Sep 7, 2026 · Updated Sep 8, 2026

SSRF in FeehiCMS 2.1.0 through 2.1.1 allows remote authenticated users to access loopback and link-local services via source[]. The UEditor catchImage path passes the source[] URL to saveRemote(), whose private-range-only validation accepts reserved addresses before get_headers() and readfile() request the supplied host and port. The CNA assessment requires high privileges, while the public proof of concept reports unauthenticated reachability; demonstrated consequences are internal port scanning and requests to internal services.

CVSS severityUnavailable
Unscored
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in FeehiCMS 2.1.0 through 2.1.1 allows remote authenticated users to access loopback and link-local services via source[]. The UEditor catchImage path passes the source[] URL to saveRemote(), whose private-range-only validation accepts reserved addresses before get_headers() and readfile() request the supplied host and port. The CNA assessment requires high privileges, while the public proof of concept reports unauthenticated reachability; demonstrated consequences are internal port scanning and requests to internal services.

The record

CVE
CVE-2026-86240
Published
Sep 7, 2026
Updated
Sep 8, 2026
Vendor
liufee
Product
FeehiCMS
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.1.0
  2. Affected versionversion=2.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

liufee · FeehiCMSversion=2.1.0; version=2.1.1

Published CVSS scores

4.7VulDB CNACVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
4.7VulDB CNACVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.8VulDB CNAAV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery
CAPEC-664Server Side Request Forgery
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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