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CVE-2026-49136— Banana Slides 0.4.0 Path Traversal via generate_image() in ai_service.py

CVSS 7.5 · High

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-49136

Vulnerability Information
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Vulnerability Title
Banana Slides 0.4.0 Path Traversal via generate_image() in ai_service.py
Source: NVD (National Vulnerability Database)
Vulnerability Description
Banana Slides through 0.4.0, patched in commit e8bc490, contains a path traversal vulnerability in the generate_image() function within the AI service backend that allows unauthenticated attackers to read arbitrary image-format files outside the intended uploads directory by exploiting an incomplete path prefix check using os.path.startswith() without a trailing separator. Attackers can supply crafted markdown image references in user-controlled page descriptions that resolve to sibling directories whose names share the uploads folder prefix, bypassing the directory confinement check and causing the application to read files from unintended locations via PIL Image.open().
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Anionexbanana-slides 0 ~ 0.4.0 -

II. Public POCs for CVE-2026-49136

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III. Intelligence Information for CVE-2026-49136

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Patches & Fixes for CVE-2026-49136 (2)

Vendor Advisories for CVE-2026-49136 (1)

Other References for CVE-2026-49136 (1)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-49136

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