GHSA-f795-p5jw-j6g2

Suggest an improvement
Source
https://github.com/advisories/GHSA-f795-p5jw-j6g2
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-f795-p5jw-j6g2/GHSA-f795-p5jw-j6g2.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-f795-p5jw-j6g2
Aliases
Published
2026-09-16T21:53:43Z
Modified
2026-09-16T22:00:04Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
djust: SSE sessions are not bound to the authenticated user; the client-chosen session_id is the sole authorization capability (session hijack)
Details

Impact

SSE sessions were keyed solely by a client-chosen session_id with no binding to the authenticated user — a control the WebSocket transport has but that was dropped on SSE. An attacker who learns (or a victim who leaks) a session_id could connect to the message endpoint and dispatch event handlers that execute with the victim's identity and state.

Patches

Fixed in djust 1.0.7. Each SSE session is bound to its owning principal at creation and cross-principal access is rejected; SSE session creation is additionally capped per principal.

Workarounds

Disable the SSE transport short of upgrading.

Database specific
{
    "cwe_ids":  [
        "CWE-384",
        "CWE-639",
        "CWE-862"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-16T21:53:43Z",
    "nvd_published_at":  null,
    "severity":  "HIGH"
}
References

Affected packages

PyPI / djust

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.7

Affected versions

0.*
0.1.0
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.2.0
0.2.1
0.2.2
0.3.0
0.3.1
0.3.2
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.9.0
0.9.1
0.9.2
0.9.4
0.9.5
0.9.6
0.9.7
1.*
1.0.0rc1
1.0.0rc2
1.0.0rc3
1.0.0rc4
1.0.0rc6
1.0.0rc7
1.0.0rc8
1.0.0rc9
1.0.0rc10
1.0.0rc11
1.0.0rc12
1.0.0rc13
1.0.0rc14
1.0.0rc15
1.0.0rc16
1.0.0rc17
1.0.0rc18
1.0.0
1.0.1rc1
1.0.1
1.0.2rc1
1.0.2rc2
1.0.2rc3
1.0.2
1.0.3rc1
1.0.3rc2
1.0.3
1.0.4rc1
1.0.4
1.0.5rc1
1.0.5rc2
1.0.5rc3
1.0.5rc4
1.0.5rc5
1.0.5
1.0.6

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-f795-p5jw-j6g2/GHSA-f795-p5jw-j6g2.json"