GHSA-fj52-5g4h-gmq8: Pyload ng PyLoad's Session Not Invalidated After Vulnerability

LOW
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CWE-613
Published
Advisory Summary

GHSA-fj52-5g4h-gmq8 is a LOW pyload's session not invalidated after vulnerability (CWE-613: Insufficient Session Expiration) affecting Pyload ng libraries in the PyPI ecosystem. The issue involves pyload's session not invalidated after permission changes. Remediation is available in the latest vendor maintenance releases.

GHSA-fj52-5g4h-gmq8 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-fj52-5g4h-gmq8
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-613: Insufficient Session Expiration
Affected Product Pyload ng
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-fj52-5g4h-gmq8

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

pyload-ng fixed: Latest secure release 
pip install pyload-ng>=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 pyload-ng

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-fj52-5g4h-gmq8, inspect your installed packages using pip:

pip show pyload-ng

Analyze the terminal output to locate any version of Pyload ng 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 pyload-ng command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-613: Insufficient Session Expiration, where according to wasc, "insufficient session expiration is when a web site permits an attacker to reuse old session credentials or session ids for authorization.". In Pyload ng, 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

### Summary The `pyload` application does not properly invalidate or modify sessions upon changes made to a user's permissions. ### Details Whenever an administrator changes the permissions a specific account has, they do not expect that account still being able to access data that their new permissions do not allow. This is not the case for the `pyload` application, as a user with a valid session can still perform the actions. ### PoC Take a user with all the permissions, as shown below. ![image](https://user-images.githubusercontent.com/44903767/294956335-0e4da84f-bf9a-42c8-87f1-f5ff35967c63.png) We now log in as this user. ![image](https://user-images.githubusercontent.com/44903767/294956539-ac6805fe-957d-4289-8ca9-2f3b6b2878a3.png) Let us now take away all the permissions. ![image](https://user-images.githubusercontent.com/44903767/294956689-757e6e08-03fd-42eb-b4a5-1ceefa6c24ed.png) The logged in session can still be used to access everything in the application. ![image](https://user-images.githubusercontent.com/44903767/294956943-fa0f23c0-a28c-4eed-89d6-1cc074feda6d.png) ### Impact Should permissions be taken away, then the user is expected not to be able to execute the actions belonging to those actions anymore.

GHSA-fj52-5g4h-gmq8 Affected Pyload ng Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
pyload-ng
pypi/pyload-ng
PyPI
≤ 0.5.0b3.dev97

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pyload/pyload/security/advisories/GHSA-fj52-5g4h-gmq8
Security Fix Commit FIX COMMIT
https://github.com/pyload/pyload/commit/e95804fb0d06cbb07d2ba380fc494d9ff89b68c1
Pyload ng Source Repository REPOSITORY
https://github.com/pyload/pyload

Frequently Asked Questions

What is GHSA-fj52-5g4h-gmq8?
GHSA-fj52-5g4h-gmq8 is a security vulnerability in Pyload ng involving pyLoad's Session Not Invalidated After Permission Changes under CWE-613: Insufficient Session Expiration.
Which Pyload ng versions are affected?
Affected versions include releases prior to current release patches across affected packages: pyload-ng.
What version fixes GHSA-fj52-5g4h-gmq8?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is pyload-ng affected?
Yes, pyload-ng is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with GHSA-fj52-5g4h-gmq8?
GHSA-fj52-5g4h-gmq8 is classified under CWE-613: Insufficient Session Expiration (According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.").
How can I check PyPI dependencies for GHSA-fj52-5g4h-gmq8?
Run the dependency tree command: 'pip show pyload-ng'. 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-fj52-5g4h-gmq8",
  "modified" : "2026-04-14T23:39:25Z",
  "published" : "2026-04-14T23:39:25Z",
  "aliases" : [ ],
  "summary" : "pyLoad's Session Not Invalidated After Permission Changes",
  "details" : "### Summary\nThe `pyload` application does not properly invalidate or modify sessions upon changes made to a user's permissions.\n\n### Details\nWhenever an administrator changes the permissions a specific account has, they do not expect that account still being able to access data that their new permissions do not allow. This is not the case for the `pyload` application, as a user with a valid session can still perform the actions.\n\n### PoC\nTake a user with all the permissions, as shown below.\n![image](https://user-images.githubusercontent.com/44903767/294956335-0e4da84f-bf9a-42c8-87f1-f5ff35967c63.png)\n\nWe now log in as this user.\n![image](https://user-images.githubusercontent.com/44903767/294956539-ac6805fe-957d-4289-8ca9-2f3b6b2878a3.png)\n\nLet us now take away all the permissions.\n![image](https://user-images.githubusercontent.com/44903767/294956689-757e6e08-03fd-42eb-b4a5-1ceefa6c24ed.png)\n\nThe logged in session can still be used to access everything in the application.\n![image](https://user-images.githubusercontent.com/44903767/294956943-fa0f23c0-a28c-4eed-89d6-1cc074feda6d.png)\n\n### Impact\nShould permissions be taken away, then the user is expected not to be able to execute the actions belonging to those actions anymore.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "pyload-ng"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.5.0b3.dev97"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pyload/pyload/security/advisories/GHSA-fj52-5g4h-gmq8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pyload/pyload/commit/e95804fb0d06cbb07d2ba380fc494d9ff89b68c1"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pyload/pyload"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-613" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-14T23:39:25Z",
    "nvd_published_at" : null
  }
}