CVE-2023-32318

What it is

Nextcloud server provides a home for data. A regression in the session handling between Nextcloud Server and the Nextcloud Text app prevented a correct destruction of the session on logout if cookies were not cleared manually. After successfully authenticating with any other account the previous session would be continued and the attacker would be authenticated as the previously logged in user. It is recommended that the Nextcloud Server is upgraded to 25.0.6 or 26.0.1.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account, but needs a user to act. High risk of data exposure, data tampering.

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

1. 2023-05-26 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:58 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: 7.2 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-05-26 18:15 UTC

Last modified

2026-06-17 05:58 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-613

Record status

Modified

Affected

• Nextcloud Server < 25.0.6
• Nextcloud Server 26.0.0

Attack profile CVSS 3.1 · 7.2

Attack vector

Local

Complexity

High

Privileges needed

Low

User interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

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-2023-32318.md and follow it. Check whether this project is affected by CVE-2023-32318. 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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