What is CVE-2023-26482?

CVE-2023-26482 is a critical-severity vulnerability in Nextcloud Security-advisories, classified under OS Command Injection. CVSS score: 9.1/10. Published 2023-03-30.

How severe is CVE-2023-26482?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2023-26482 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Nextcloud Security-advisories

CVE-2023-26482

Nextcloud server is an open source home cloud implementation. In affected versions a missing scope validation allowed users to create workflows which are designed to be only available for administrators. Some workflows are designed to be R…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.511 (97.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.

Affected products

Nextcloud Security-advisories — versions < 24.0.10, >= 25.0.0, < 25.0.4

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h3c9-cmh8-7qpj (x_refsource_CONFIRM)
https://github.com/nextcloud/server/commit/5a06b50b10cc9278bbe68bbf897a0c4aeb0c4e60 (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-26482?: CVE-2023-26482 is a critical-severity vulnerability in Nextcloud Security-advisories, classified under OS Command Injection. CVSS score: 9.1/10. Published 2023-03-30.
How severe is CVE-2023-26482?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2023-26482 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.