Vulnerabilities in pkg:pypi/backend.ai

PACKAGE
Advisory Identifier: GHSA-hxvr-gg2w-j48x
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Advisory Summary

CVE-2025-49653 is a HIGH (CVSS 8.0) backendai vulnerable to exposure of vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Backend.ai libraries in the PyPI ecosystem. The issue involves backendai vulnerable to exposure of sensitive information to an unauthorized actor. Remediation is available in the latest vendor maintenance releases.

3 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/backend.ai

3 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/backend.ai. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-hxvr-gg2w-j48x CVE-2025-49653 HIGH BackendAI vulnerable to Exposure of Sensitive Information to an Unauthorized Actor
GHSA-h889-475r-wfmm CVE-2025-49651 HIGH Backend.AI Missing Authorization vulnerability
GHSA-ww28-4m4v-cq4j CVE-2025-49652 CRITICAL BackendAI Missing Authentication for Critical Function

CVE-2025-49653 at a Glance

CVE Identifier CVE-2025-49653
GHSA Identifier GHSA-hxvr-gg2w-j48x
Severity HIGH
CVSS v3.1 Base Score 8.0
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Backend.ai
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-49653

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

backend.ai fixed: Latest secure release 
pip install backend.ai>=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 backend.ai

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-49653, inspect your installed packages using pip:

pip show backend.ai

Analyze the terminal output to locate any version of Backend.ai 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 backend.ai command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Backend.ai, 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

Exposure of sensitive data in active sessions in Lablup's BackendAI allows attackers to retrieve credentials for users on the management platform. NOTE: The maintainers of BackendAI do not consider this report to fit with their threat model and advise users to follow security advice from https://github.com/lablup/backend.ai/pull/7587 in their instances to protect themselves from the conditions that would lead to the situation described in the CVE record.

CVE-2025-49653 Affected Backend.ai Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
backend.ai
pypi/backend.ai
PyPI
≤ 25.3.3

References

NVD — CVE-2025-49653 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-49653
Backend.ai Source Repository REPOSITORY
https://github.com/lablup/backend.ai/pull/7587
Backend.ai Source Repository REPOSITORY
https://github.com/lablup/backend.ai
Backend.ai Security Information SECURITY
https://hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653
Backend.ai Security Information SECURITY
https://hiddenlayer.com/sai_security_advisor/2025-06-backendai

Frequently Asked Questions

What is CVE-2025-49653?
CVE-2025-49653 is a security vulnerability in Backend.ai involving BackendAI vulnerable to Exposure of Sensitive Information to an Unauthorized Actor under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Backend.ai versions are affected?
Affected versions include releases prior to current release patches across affected packages: backend.ai.
What version fixes CVE-2025-49653?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is backend.ai affected?
Yes, backend.ai is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-49653?
CVE-2025-49653 has a CVSS v3.1 base score of 8.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2025-49653?
CVE-2025-49653 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check PyPI dependencies for CVE-2025-49653?
Run the dependency tree command: 'pip show backend.ai'. 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-hxvr-gg2w-j48x",
  "modified" : "2026-01-21T14:46:33Z",
  "published" : "2025-06-09T18:32:17Z",
  "aliases" : [ "CVE-2025-49653" ],
  "summary" : "BackendAI vulnerable to Exposure of Sensitive Information to an Unauthorized Actor",
  "details" : "Exposure of sensitive data in active sessions in Lablup's BackendAI allows attackers to retrieve credentials for users on the management platform.\n\nNOTE: The maintainers of BackendAI do not consider this report to fit with their threat model and advise users to follow security advice from https://github.com/lablup/backend.ai/pull/7587 in their instances to protect themselves from the conditions that would lead to the situation described in the CVE record.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "backend.ai"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "25.3.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-49653"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lablup/backend.ai/pull/7587"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/lablup/backend.ai"
  }, {
    "type" : "WEB",
    "url" : "https://hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653"
  }, {
    "type" : "WEB",
    "url" : "https://hiddenlayer.com/sai_security_advisor/2025-06-backendai"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-06-11T17:38:06Z",
    "nvd_published_at" : "2025-06-09T18:15:27Z"
  }
}