Calendar app returns full stacktrace when an error happens while editing appointment

published 2023-12-21 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-52368

cvss: 3.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits: 0; none known

Nextcloud/Cloud is a calendar app for Nextcloud. An attacker can gain access to stacktrace and internal paths of the server when generating an exception while editing a calendar appointment. It is recommended that the Nextcloud Calendar app is upgraded to 4.5.3

Patch / fix

fixed in 1 links 1

nextcloud calendar 4.5.3

github.com/nextcloud/calendar#5553 pull request

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 23 mo ago (2024-11-27)

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
NVD	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

nextcloud security-advisories

Classification

Weakness

CWE-1258 Exposure of Sensitive System Information Due to Uncleared Debug Information
CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer

References

github.com /nextcloud/calendar/pull/5553
patch, vendor-advisory
github.com /nextcloud/security-advisories/security/advisories/GHSA-fv3c-qvjr-5rv8
vendor-advisory

Sources

CVE List CVE-2023-48308
NVD CVE-2023-48308

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Summary