HIGH

CVE-2023-23596

CVSS v3

8.8

HIGH

EPSS Score

15.2 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2023-23596 yet.

Full record on NVD

Description

jc21 NGINX Proxy Manager through 2.9.19 allows OS command injection. When creating an access list, the backend builds an htpasswd file with crafted username and/or password input that is concatenated without any validation, and is directly passed to the exec command, potentially allowing an authenticated attacker to execute arbitrary commands on the system. NOTE: this is not part of any NGINX software shipped by F5.

Technical details

Published: 2023-01-20

Frequently asked questions

What is CVE-2023-23596?

Is CVE-2023-23596 actively exploited?

Active exploitation of CVE-2023-23596 has not been confirmed. Its EPSS score was 15.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-23596?

CVE-2023-23596 has a CVSS v3 base score of 8.8 (HIGH severity).

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