CVE-2022-42149Public exploitNetwork attack vector

Unauthenticated SSRF via unfiltered preview URL

Published Oct 17, 2022 · Updated May 14, 2025

SSRF in kkFileView 4.0 allows remote attackers to make arbitrary server-side requests through the online preview endpoint. The getCorsFile method Base64-decodes urlPath and downloads the resulting HTTP URL without restricting its host, address range, or destination. No authentication or user interaction is required, and the response returns downloaded bytes from attacker-selected network locations.

CVSS severity9.8
Critical
EPSS probability2.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in kkFileView 4.0 allows remote attackers to make arbitrary server-side requests through the online preview endpoint. The getCorsFile method Base64-decodes urlPath and downloads the resulting HTTP URL without restricting its host, address range, or destination. No authentication or user interaction is required, and the response returns downloaded bytes from attacker-selected network locations.

The record

CVE
CVE-2022-42149
Published
Oct 17, 2022
Updated
May 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 17, 2022CVE publishedPublication date reported by the CVE source.
  2. May 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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)
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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