CVE-2026-115933

9.9 CRITICAL 0.2% exploit odds Fix listed Other Browser & mail

What it is

Postiz signs its session, invitation and password reset tokens with one shared secret and without any marker of what a token is for. A route that refreshes the credentials of a browser-extension channel signed data taken from the request itself and stored the result where the requesting user can read it back. A user could therefore obtain a validly signed token containing any claims they choose, which the application accepts as a session, as an organization invitation with a chosen role, as a password reset or as an enterprise provisioning token. A second, narrower route that creates team invitations signs extra fields from the request body in the same way.

At a glance

Exploitability: Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
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

2026-10-23 21:21 UTC ReservedThe CVE id was reserved by its CNA
2026-10-24 15:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-11-02 15:17 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: 9.9 CRITICAL (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-10-24 15:17 UTC
Last modified: 2026-11-02 15:17 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-290
Record status: Deferred

Attack profile CVSS 3.1 · 9.9

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Changed
Confidentiality: High
Integrity: High
Availability: High

Raw vector

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

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2026-115933.md and follow it. Check whether this project is affected by CVE-2026-115933. 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