CVE-2023-3485

3.0 LOW 0.2% exploit odds Fix listed

What it is

Insecure defaults in open-source Temporal Server before version 1.20 on all platforms allows an attacker to craft a task token with access to a namespace other than the one specified in the request. Creation of this task token must be done outside of the normal Temporal server flow. It requires the namespace UUID and information from the workflow history for the target namespace. Under these conditions, it is possible to interfere with pending tasks in other namespaces, such as marking a task failed or completed. If a task is targeted for completion by the attacker, the targeted namespace must also be using the same data converter configuration as the initial, valid, namespace for the task completion payload to be decoded by workers in the target namespace.

At a glance

Exploitability: Can be exploited locally on the machine with an admin-level account. Limited direct impact.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-06-30 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 06:14 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.2% in the next 30 days (EPSS).
Severity: 3.0 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-06-30 18:15 UTC
Last modified: 2026-06-17 06:14 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-863 · Incorrect authorization
Record status: Modified

Affected

Temporal < 1.20.0

Attack profile CVSS 3.1 · 3.0

Attack vector: Local
Complexity: High
Privileges needed: High
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: Low

Raw vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-3485.md and follow it. Check whether this project is affected by CVE-2023-3485. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record