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CVE-2023-48304

16
FAUCET Score

CVE-2023-48304 describes a vulnerability in Nextcloud Server and Nextcloud Enterprise Server versions 22 through 27, where an authenticated attacker could enable or disable the birthday calendar for any user on the same server. This vulnerability has a CVSS score of 4.3 (Medium), indicating a low impact on integrity and no impact on confidentiality or availability, with low attack complexity and requiring user authentication. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
>= 22.0.0, <= 22.2.10.16CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
>= 23.0.0, < 23.0.12.11CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
>= 24.0.0, < 24.0.12.7CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
>= 25.0.0, < 25.0.11CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
>= 25.0.0, < 25.0.11CPE matchmatch criteria
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 55th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / nextcloud/security-advisories/security/advisories/GHSA-8jwv-c8c8-9fr3
Vendor Advisory
github.com / nextcloud/server/pull/40292
Issue TrackingPatch
hackerone.com / reports/2112973
ExploitThird Party Advisory