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TI-2023-21044 Aliases CVE-2023-40171

Dispatch writes JWT tokens in error message

Priority HIGH 78CWE-209Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-209.

Summary

Dispatch is an open source security incident management tool. The server response includes the JWT Secret Key used for signing JWT tokens in error message when the `Dispatch Plugin - Basic Authentication Provider` plugin encounters an error when attempting to decode a JWT token. Any Dispatch users who own their instance and rely on the `Dispatch Plugin - Basic Authentication Provider` plugin for authentication may be impacted, allowing for any account to be taken over within their own instance. This could be done by using the secret to sign attacker crafted JWTs. If you think that you may be impacted, we strongly suggest you to rotate the secret stored in the `DISPATCH_JWT_SECRET` envvar in the `.env` file. This issue has been addressed in commit `b1942a4319` which has been included in the `20230817` release. users are advised to upgrade. There are no known workarounds for this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00935 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed dispatch (Netflix): 20230817

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Netflixdispatchbefore 2023081720230817Patch availableCNA
  • dispatch VendorNetflix Affected before 20230817 Fixed in 20230817 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:netflix:dispatch:*:*:*:*:*:*:*:*before 20230817VulnerableNetflix
  • cpe:2.3:a:netflix:dispatch:*:*:*:*:*:*:*:* Versions before 20230817 Vulnerable ·Netflix

Remediation

  • Fix · CNA dispatch (Netflix) Fixed in 20230817

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-40171

References

  • TI-2020-07439 The Access Control issues include allowing a regular user to view a restricted incident… CVSS 3.1MEDIUM 6.5
  • TI-2020-07438 Cross-site scripting in Netflix Dispatch CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences