CVE-2025-25302: Rembg Rembg CORS Misconfiguration Vulnerability

HIGH
Advisory Identifier: GHSA-59qh-fmm7-3g9q
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CWE-346
Published
Advisory Summary

CVE-2025-25302 is a HIGH rembg cors misconfiguration vulnerability (CWE-346: Origin Validation Error) affecting Rembg libraries in the PyPI ecosystem. The issue involves rembg cors misconfiguration. Remediation is available in the latest vendor maintenance releases.

CVE-2025-25302 at a Glance

CVE Identifier CVE-2025-25302
GHSA Identifier GHSA-59qh-fmm7-3g9q
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-346: Origin Validation Error
Affected Product Rembg
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2025-25302

To remediate this vulnerability, upgrade all affected Rembg dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

rembg fixed: Latest secure release 
pip install rembg>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show rembg

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-25302, inspect your installed packages using pip:

pip show rembg

Analyze the terminal output to locate any version of Rembg in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show rembg command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-346: Origin Validation Error, where the product does not properly verify that the source of data or communication is valid. In Rembg, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Rembg is a tool to remove images background. In Rembg 2.0.57 and earlier, the CORS middleware is setup incorrectly. All origins are reflected, which allows any website to send cross site requests to the rembg server and thus query any API. Even if authentication were to be enabled, allow_credentials is set to True, which would allow any website to send authenticated cross site requests.

CVE-2025-25302 Affected Rembg Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
rembg
pypi/rembg
PyPI
≤ 2.0.57

References

NVD — CVE-2025-25302 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-25302
Rembg Source Repository REPOSITORY
https://github.com/danielgatis/rembg
Rembg Source Repository REPOSITORY
https://github.com/danielgatis/rembg/blob/d1e00734f8a996abf512a3a5c251c7a9a392c90a/rembg/commands/s_command.py#L93
GitHub Advisory / Wiki ADVISORY
https://securitylab.github.com/advisories/GHSL-2024-161_GHSL-2024-162_rembg

Frequently Asked Questions

What is CVE-2025-25302?
CVE-2025-25302 is a security vulnerability in Rembg involving Rembg CORS misconfiguration under CWE-346: Origin Validation Error.
Which Rembg versions are affected?
Affected versions include releases prior to current release patches across affected packages: rembg.
What version fixes CVE-2025-25302?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is rembg affected?
Yes, rembg is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with CVE-2025-25302?
CVE-2025-25302 is classified under CWE-346: Origin Validation Error (The product does not properly verify that the source of data or communication is valid.).
How can I check PyPI dependencies for CVE-2025-25302?
Run the dependency tree command: 'pip show rembg'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-59qh-fmm7-3g9q",
  "modified" : "2025-03-11T21:32:43Z",
  "published" : "2025-03-11T21:32:43Z",
  "aliases" : [ "CVE-2025-25302" ],
  "summary" : "Rembg CORS misconfiguration",
  "details" : "Rembg is a tool to remove images background. In Rembg 2.0.57 and earlier, the CORS middleware is setup incorrectly. All origins are reflected, which allows any website to send cross site requests to the rembg server and thus query any API. Even if authentication were to be enabled, allow_credentials is set to True, which would allow any website to send authenticated cross site requests.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "rembg"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.57"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-25302"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/danielgatis/rembg"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/danielgatis/rembg/blob/d1e00734f8a996abf512a3a5c251c7a9a392c90a/rembg/commands/s_command.py#L93"
  }, {
    "type" : "ADVISORY",
    "url" : "https://securitylab.github.com/advisories/GHSL-2024-161_GHSL-2024-162_rembg"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-346" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-11T21:32:43Z",
    "nvd_published_at" : "2025-03-03T17:15:14Z"
  }
}