GHSA-FJ52-5G4H-GMQ8

Vulnerability from github – Published: 2026-04-14 23:39 – Updated: 2026-04-14 23:39
VLAI
Summary
pyLoad's Session Not Invalidated After Permission Changes
Details

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

We now log in as this user. image

Let us now take away all the permissions. image

The logged in session can still be used to access everything in the application. image

Impact

Should permissions be taken away, then the user is expected not to be able to execute the actions belonging to those actions anymore.

Severity
2.9 (Low)
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
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pyload-ng"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.5.0b3.dev97"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-613"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-14T23:39:25Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Summary\nThe `pyload` application does not properly invalidate or modify sessions upon changes made to a user\u0027s 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.",
  "id": "GHSA-fj52-5g4h-gmq8",
  "modified": "2026-04-14T23:39:25Z",
  "published": "2026-04-14T23:39:25Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pyLoad\u0027s Session Not Invalidated After Permission Changes"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.