CVE-2026-115924

Rembg is a tool to remove images background. Prior to 2.0.82, the public /api/remove endpoint passes attacker-controlled extras.sam_model through rembg/commands/s_command.py to rembg/sessions/sam.py, where it is interpolated into SAM filenames and GitHub download URLs passed to pooch.retrieve() without a pinned hash. An unauthenticated attacker can supply a sam_model value combining path traversal with URL fragment syntax to exploit the HTTP request discarding the fragment while the local POSIX path retains it. The first request primes the attacker-selected path tree, and an identical repeated request downloads malicious ONNX encoder and decoder files beside a readable target file. The graphs can load the target through ONNX external data and encode its bytes into the returned PNG mask, disclosing complete files accessible to the rembg process and allowing arbitrary ONNX computation. This issue is fixed in version 2.0.82.

CVSS v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/danielgatis/rembg/commit/b2758c6b39bb2b02df90a03128110339476984d3
https://github.com/danielgatis/rembg/releases/tag/v2.0.82
https://github.com/danielgatis/rembg/security/advisories/GHSA-qr6x-7v33-6qmg
https://github.com/danielgatis/rembg/security/advisories/GHSA-qr6x-7v33-6qmg

Configurations

No configuration.

History

31 Oct 2026, 02:17

Type	Values Removed	Values Added
References	~~() https://github.com/danielgatis/rembg/security/advisories/GHSA-qr6x-7v33-6qmg -~~	() https://github.com/danielgatis/rembg/security/advisories/GHSA-qr6x-7v33-6qmg -

26 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 20:17

Updated : 2026-10-31 02:17

NVD link : CVE-2026-115924

Mitre link : CVE-2026-115924

CVE.ORG link : CVE-2026-115924

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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