Unauthenticated file read and write via path traversal
Published Jun 15, 2026 · Updated Jun 15, 2026
Path traversal in Microweber 2.0.20 and earlier allows remote attackers to read files and write to chosen paths without authentication. The public thumbnail_img endpoint passes cache_path_relative through normalize_path, which preserves ../ sequences, before using it in filesystem path construction. An existing target is returned directly, while path-controlled writes require a local SVG source; both operations escape the thumbnail cache boundary.
Summary
What happened
Path traversal in Microweber 2.0.20 and earlier allows remote attackers to read files and write to chosen paths without authentication. The public thumbnail_img endpoint passes cache_path_relative through normalize_path, which preserves ../ sequences, before using it in filesystem path construction. An existing target is returned directly, while path-controlled writes require a local SVG source; both operations escape the thumbnail cache boundary.
The record
- CVE
- CVE-2026-12198
- Published
- Jun 15, 2026
- Updated
- Jun 15, 2026
- Vendor
- Microweber
- Product
- Microweber
- Classifications
- CWE-22, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 15, 2026CVE publishedPublication date reported by the CVE source.
- Jun 15, 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.
- Affected versionversion=2.0.0
- Affected versionversion=2.0.1
- Affected versionversion=2.0.10
- Affected versionversion=2.0.11
- Affected versionversion=2.0.12
- Affected versionversion=2.0.13
- Affected versionversion=2.0.14
- Affected versionversion=2.0.15
- Affected versionversion=2.0.16
- Affected versionversion=2.0.17
- Affected versionversion=2.0.18
- Affected versionversion=2.0.19
- Affected versionversion=2.0.2
- Affected versionversion=2.0.20
- Affected versionversion=2.0.3
- Affected versionversion=2.0.4
- Affected versionversion=2.0.5
- Affected versionversion=2.0.6
- Affected versionversion=2.0.7
- Affected versionversion=2.0.8
- Affected versionversion=2.0.9
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- Microweber thumbnail_img traversal reproductionfunctional · demonstrated
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
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo