Unauthenticated file read via path-prefix collision
Published Jun 1, 2026 · Updated Jun 1, 2026
Path traversal in Anionex Banana Slides 0.4.0 and earlier allows remote attackers to read image-format files outside the uploads directory. In generate_image(), a string startswith() comparison omits the trailing path separator, so sibling paths sharing the uploads prefix pass to PIL Image.open(). Default deployments require no authentication, and direct disclosure is limited to valid image files in prefix-matching sibling directories.
Summary
What happened
Path traversal in Anionex Banana Slides 0.4.0 and earlier allows remote attackers to read image-format files outside the uploads directory. In generate_image(), a string startswith() comparison omits the trailing path separator, so sibling paths sharing the uploads prefix pass to PIL Image.open(). Default deployments require no authentication, and direct disclosure is limited to valid image files in prefix-matching sibling directories.
The record
- CVE
- CVE-2026-49136
- Published
- Jun 1, 2026
- Updated
- Jun 1, 2026
- Vendor
- Anionex
- Product
- Banana Slides
- Classifications
- CWE-22, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 1, 2026CVE publishedPublication date reported by the CVE source.
- Jun 1, 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?
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- Affected versionversion=0 <=0.4.0
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
- Issue 429 automated path-traversal proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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