CVE-2026-73243Public exploitNetwork attack vectorHinoki check available

Unauthenticated SSRF via unfiltered addTask queue fetch

Published Aug 11, 2026 · Updated Aug 11, 2026

SSRF in kkFileView 5.0.0 allows remote attackers to make outbound requests through the unauthenticated GET /addTask endpoint. WebConfig omits /addTask from TrustHostFilter, while FileHandlerService#getFileAttribute trusts fullfilename to force an OFFICE, COMPRESS, or CAD conversion and FileConvertQueueTask fetches the supplied URL. Exploitation requires /addTask to be reachable without an upstream authentication gateway or host allowlist, and the observed consequence is a blind outbound request to an internal or attacker-controlled host.

CVSS severity5.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in kkFileView 5.0.0 allows remote attackers to make outbound requests through the unauthenticated GET /addTask endpoint. WebConfig omits /addTask from TrustHostFilter, while FileHandlerService#getFileAttribute trusts fullfilename to force an OFFICE, COMPRESS, or CAD conversion and FileConvertQueueTask fetches the supplied URL. Exploitation requires /addTask to be reachable without an upstream authentication gateway or host allowlist, and the observed consequence is a blind outbound request to an internal or attacker-controlled host.

The record

CVE
CVE-2026-73243
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
kekingcn
Product
kkFileView
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=< 5.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

kekingcn · kkFileViewversion=< 5.0.1

Published CVSS scores

5.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
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

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Your stack

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