CVE-2025-65681: Tutor Overhang Tutor Discloses Sensitive Information Vulnerability

LOW
Advisory Identifier: GHSA-gq25-78jf-v78c
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CVSS 3.3
CWE-384
Published
Advisory Summary

CVE-2025-65681 is a LOW (CVSS 3.3) overhang tutor discloses sensitive information vulnerability (CWE-384: Session Fixation) affecting Tutor libraries in the PyPI ecosystem. The issue involves overhang tutor discloses sensitive information due to improper cache-control. Remediation is available in the latest vendor maintenance releases.

CVE-2025-65681 at a Glance

CVE Identifier CVE-2025-65681
GHSA Identifier GHSA-gq25-78jf-v78c
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-384: Session Fixation
Affected Product Tutor
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 3.3

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2025-65681

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

tutor fixed: Latest secure release 
pip install tutor>=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 tutor

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-65681, inspect your installed packages using pip:

pip show tutor

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-384: Session Fixation, where authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. In Tutor, 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

An issue was discovered in Overhang.IO (tutor-open-edx) (overhangio/tutor) 20.0.2 allowing local unauthorized attackers to gain access to sensitive information due to the absence of proper cache-control HTTP headers and client-side session checks.

CVE-2025-65681 Affected Tutor Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
tutor
pypi/tutor
PyPI
≤ 20.0.2

References

NVD — CVE-2025-65681 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-65681
Tutor Security Information SECURITY
https://docs.tutor.edly.io
Tutor Source Repository REPOSITORY
https://github.com/Rivek619/CVE-2025-65681
Tutor Source Repository REPOSITORY
https://github.com/overhangio/tutor
Tutor Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/tutor/PYSEC-2025-219.yaml

Frequently Asked Questions

What is CVE-2025-65681?
CVE-2025-65681 is a security vulnerability in Tutor involving Overhang Tutor Discloses Sensitive Information due to Improper Cache-Control under CWE-384: Session Fixation.
Which Tutor versions are affected?
Affected versions include releases prior to current release patches across affected packages: tutor.
What version fixes CVE-2025-65681?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is tutor affected?
Yes, tutor 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-2025-65681?
CVE-2025-65681 has a CVSS v3.1 base score of 3.3 (LOW) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2025-65681?
CVE-2025-65681 is classified under CWE-384: Session Fixation (Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.).
How can I check PyPI dependencies for CVE-2025-65681?
Run the dependency tree command: 'pip show tutor'. 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-gq25-78jf-v78c",
  "modified" : "2026-06-08T19:52:17Z",
  "published" : "2025-11-26T21:31:26Z",
  "aliases" : [ "CVE-2025-65681" ],
  "summary" : "Overhang Tutor Discloses Sensitive Information due to Improper Cache-Control",
  "details" : "An issue was discovered in Overhang.IO (tutor-open-edx) (overhangio/tutor) 20.0.2 allowing local unauthorized attackers to gain access to sensitive information due to the absence of proper cache-control HTTP headers and client-side session checks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "tutor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "20.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-65681"
  }, {
    "type" : "WEB",
    "url" : "https://docs.tutor.edly.io"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Rivek619/CVE-2025-65681"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/overhangio/tutor"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/tutor/PYSEC-2025-219.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-384" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-01T22:57:57Z",
    "nvd_published_at" : "2025-11-26T19:15:49Z"
  }
}