CVE-2026-42028Public exploitNetwork attack vector

Unauthenticated image disclosure via weak traversal filtering

Published May 8, 2026 · Updated May 8, 2026

Path traversal in novaGallery before 2.1.1 allows remote attackers to read image files outside the configured gallery root. The album and cached-image routes URL-decode arbitrary path tails, while removeBadSigns strips only the literal /../ substring and never verifies that the resolved path remains under IMAGES_DIR. No authentication or user interaction is required, but disclosure is limited to reachable files that the image-processing flow can open and serve as images.

CVSS severity5.3
Medium
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 novaGallery before 2.1.1 allows remote attackers to read image files outside the configured gallery root. The album and cached-image routes URL-decode arbitrary path tails, while removeBadSigns strips only the literal /../ substring and never verifies that the resolved path remains under IMAGES_DIR. No authentication or user interaction is required, but disclosure is limited to reachable files that the image-processing flow can open and serve as images.

The record

CVE
CVE-2026-42028
Published
May 8, 2026
Updated
May 8, 2026
Vendor
novafacile
Product
novaGallery
Classifications
CWE-22, CAPEC-126, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=< 2.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

novafacile · novaGalleryversion=< 2.1.1

Published CVSS scores

5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
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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