CVE-2023-48308

Q: How do I fix CVE-2023-48308?

Upgrade calendar to 4.5.3 or later.

Q: Is CVE-2023-48308 being actively exploited?

Not that we know of. CVE-2023-48308 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.55% is the estimated probability that it will be exploited in the next 30 days. That is higher than 43% of all scored CVEs.

Q: How severe is CVE-2023-48308?

CVE-2023-48308 has a CVSS v3 base score of 3.5, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2023-48308 affect?

Published advisories record a fix for calendar (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

LOW

3.5

CVSS v3

NVD

Description

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

CWE-1258 CWE-212

How to fix

Remediation Available

calendarNVD

Affected:>= 3.0.0, < 4.5.3Fixed in:4.5.3CVE-2023-48308derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.55%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Related Vulnerabilities

Other CWE-1258 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-36912	Critical	9.6	1.0%	-	Fix
CVE-2022-31162	High	7.5	0.9%	-	Fix
CVE-2025-32257	Medium	5.3	0.8%	-	-
CVE-2022-39292	High	7.5	0.7%	-	-
CVE-2024-36913	Critical	9.3	0.7%	-	Fix
CVE-2025-15480	Critical	9.1	0.3%	-	-

Common questions

How do I fix CVE-2023-48308?

Upgrade calendar to 4.5.3 or later.

Is CVE-2023-48308 being actively exploited?

Not that we know of. CVE-2023-48308 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.55% is the estimated probability that it will be exploited in the next 30 days. That is higher than 43% of all scored CVEs.

How severe is CVE-2023-48308?

CVE-2023-48308 has a CVSS v3 base score of 3.5, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-48308 affect?

Published advisories record a fix for calendar (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.