CVE-2026-61591: djust Unsigned Client State Snapshot Is Vulnerability

HIGH
Advisory Identifier: GHSA-c67v-vqrp-m5wj
Share
CVSS 8.1
CWE-345 CWE-915
Published
Advisory Summary

CVE-2026-61591 is a HIGH (CVSS 8.1) unsigned client state snapshot is vulnerability (CWE-345: Insufficient Verification of Data Authenticity) affecting djust libraries in the PyPI ecosystem. The issue involves unsigned client state snapshot is restored as trusted view state (privilege escalation / state injection). Remediation is available by upgrading affected packages to version 1.0.7.

CVE-2026-61591 at a Glance

CVE Identifier CVE-2026-61591
GHSA Identifier GHSA-c67v-vqrp-m5wj
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-345: Insufficient Verification of Data Authenticity
Affected Product djust
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.1

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

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

How to Fix CVE-2026-61591

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

djust fixed: 1.0.7 
pip install djust>=1.0.7
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 djust

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-61591, inspect your installed packages using pip:

pip show djust

Analyze the terminal output to locate any version of djust in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.7), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-345: Insufficient Verification of Data Authenticity, where the product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. In djust, 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

### Impact For views that opt into state snapshots, the snapshot `state_json` embedded in the client page was restored on reconnect as **trusted** view state with no integrity check. A client could edit the unsigned `state_json` in their page and return it in the reconnect mount frame to **inject arbitrary view attributes** — e.g. flip `is_admin` to `True`, or change `account_id` / `balance` — escalating privilege or tampering with business state held in public view attributes (the normal djust pattern). ### Patches Fixed in **djust 1.0.7**. State snapshots are signed; unsigned or forged snapshots are rejected on the back-navigation restore path. ### Workarounds Do not enable state snapshots; do not hold authorization/ownership state in public view attributes.

CVE-2026-61591 Affected djust Versions

1 component(s)
Fixed Versions:
1.0.7
Product / Package Ecosystem Affected Versions Fixed Version
djust
pypi/djust
PyPI
< 1.0.7
1.0.7

References

GitHub Advisory / Wiki ADVISORY
https://github.com/djust-org/djust/security/advisories/GHSA-c67v-vqrp-m5wj
djust Source Repository REPOSITORY
https://github.com/djust-org/djust
djust Release RELEASE
https://github.com/djust-org/djust/releases/tag/v1.0.7

Frequently Asked Questions

What is CVE-2026-61591?
CVE-2026-61591 is a security vulnerability in djust involving Unsigned client state snapshot is restored as trusted view state (privilege escalation / state injection) under CWE-345: Insufficient Verification of Data Authenticity.
Which djust versions are affected?
Affected versions include releases prior to 1.0.7 across affected packages: djust.
What version fixes CVE-2026-61591?
Upgrading to 1.0.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is djust affected?
Yes, djust is affected in releases prior to 1.0.7. Upgrade your dependency to 1.0.7 or later.
What is the CVSS score of CVE-2026-61591?
CVE-2026-61591 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-61591?
CVE-2026-61591 is classified under CWE-345: Insufficient Verification of Data Authenticity (The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.).
How can I check PyPI dependencies for CVE-2026-61591?
Run the dependency tree command: 'pip show djust'. 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-c67v-vqrp-m5wj",
  "modified" : "2026-09-16T21:56:12Z",
  "published" : "2026-09-16T21:56:12Z",
  "aliases" : [ "CVE-2026-61591" ],
  "summary" : "djust: Unsigned client state snapshot is restored as trusted view state (privilege escalation / state injection)",
  "details" : "### Impact\nFor views that opt into state snapshots, the snapshot `state_json` embedded in the client page was restored on reconnect as **trusted** view state with no integrity check. A client could edit the unsigned `state_json` in their page and return it in the reconnect mount frame to **inject arbitrary view attributes** — e.g. flip `is_admin` to `True`, or change `account_id` / `balance` — escalating privilege or tampering with business state held in public view attributes (the normal djust pattern).\n\n### Patches\nFixed in **djust 1.0.7**. State snapshots are signed; unsigned or forged snapshots are rejected on the back-navigation restore path.\n\n### Workarounds\nDo not enable state snapshots; do not hold authorization/ownership state in public view attributes.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "djust"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/djust-org/djust/security/advisories/GHSA-c67v-vqrp-m5wj"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/djust-org/djust"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/djust-org/djust/releases/tag/v1.0.7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-345", "CWE-915" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-16T21:56:12Z",
    "nvd_published_at" : null
  }
}