Nextcloud Talk messages can still be seen on conversation after expiring when cron is misconfigured

Published 3 y ago 2023-02-27 · modified 4 mo ago 2026-06-17 · JSON

CVSS

2.6

v3.1 · CNA

CISA KEV

not known exploited

EPSS

0.8%

percentile 57%

Public exploits

none known

Nextcloud Talk is a fully on-premises audio/video and chat communication service. When cron jobs were misconfigured and therefore messages are not expired, the API would still return them while they were then hidden by the frontend code. It is recommended that the Nextcloud Talk is upgraded to 15.0.3. There are no workaround available.

CISA SSVC assessment

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 mo ago 2025-03-10

Exploit prediction (EPSS)

0.80% probability of exploitation in the next 30 days, higher than 57% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.1	2.6	`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N`
CNA	3.1	2.6	`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N`
NVD	3.1	4.3	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`

Affected products

nextcloud security-advisories

Classification

Weakness

CWE-359 Exposure of Private Personal Information to an Unauthorized Actor
CWE-668 Exposure of Resource to Wrong Sphere

References

github.com /nextcloud/security-advisories/security/advisories/GHSA-j53p-r755-v4jf · x_refsource_CONFIRM, x_transferred
github.com /nextcloud/spreed/pull/8515 · x_refsource_MISC, x_transferred
hackerone.com /reports/1784310 · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2023-26041
NVD: CVE-2023-26041

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.

Summary