User session not correctly destroyed on logout

published 2023-05-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-36565

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 1

nextcloud nextcloud_server 25.0.6

github.com/nextcloud/text#3946 pull request

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-32318 updated 2025-11-21 cvss 7.2

nextcloud: session mishandling

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 21 mo ago (2025-01-14)

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
NVD	3.1	6.7	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

nextcloud security-advisories

Classification

Weakness

CWE-613 DEPRECATED: Insufficient Session Expiration

References

github.com /nextcloud/text/pull/3946
patch
github.com /nextcloud/security-advisories/security/advisories/GHSA-q8c4-chpj-6v38
vendor-advisory

Sources

CVE List CVE-2023-32318
NVD CVE-2023-32318

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary