CVE-2026-42564Network attack vector

Unauthenticated file disclosure via unchecked filename traversal

Published May 11, 2026 · Updated May 11, 2026

Path traversal in fccview jotty·page before 1.22.0 allows remote attackers to read arbitrary server files without authentication. The /api/app-icons/[filename] route joins the untrusted filename to the icon directory and passes the result directly to fs.readFile without enforcing the base-directory boundary. The exposed files include user records, password hashes, and active session-token mappings, enabling confidentiality loss and session-token reuse.

CVSS severity8.2
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in fccview jotty·page before 1.22.0 allows remote attackers to read arbitrary server files without authentication. The /api/app-icons/[filename] route joins the untrusted filename to the icon directory and passes the result directly to fs.readFile without enforcing the base-directory boundary. The exposed files include user records, password hashes, and active session-token mappings, enabling confidentiality loss and session-token reuse.

The record

CVE
CVE-2026-42564
Published
May 11, 2026
Updated
May 11, 2026
Vendor
fccview
Product
jotty·page
Classifications
CWE-200, CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 11, 2026CVE publishedPublication date reported by the CVE source.
  2. May 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=< 1.22.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

fccview · jotty·pageversion=< 1.22.0

Published CVSS scores

8.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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