What is CVE-2021-41560?

CVE-2021-41560 is a critical-severity vulnerability in Opencats, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-12-15.

How severe is CVE-2021-41560?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-41560 known to be exploited?

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

Arbitrary file upload in Opencats

CVE-2021-41560

OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.

Vulnerability class: Unrestricted File Upload

EPSS: 0.111 (95.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Opencats
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC, Broken Link)
cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-41560?: CVE-2021-41560 is a critical-severity vulnerability in Opencats, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2021-12-15.
How severe is CVE-2021-41560?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-41560 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.