CVE-2023-39963

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 19.2% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-08-10 17:26Z3 YR AGO

Last updated

2024-10-10 17:53Z1 YR AGO

Reserved

2023-08-07

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

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

Weaknesses

• CWE-284Improper Access ControlPillar

Data version

5.1

Document digest

52cc25a91a8fc0129e589eba3a9b16e6e98ea918ae3f7e9a95e7fe1cf0d0aa02

• github.comhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-j4qm-5q5x-54m5x_refsource_CONFIRM
• github.comhttps://github.com/nextcloud/server/pull/39416x_refsource_MISC
• hackerone.comhttps://hackerone.com/reports/2067572x_refsource_MISC