What is CVE-2021-4089?

CVE-2021-4089 is a medium-severity vulnerability in Snipe Snipe/snipe-It, classified under Improper Access Control. CVSS score: 4.3/10. Published 2021-12-10.

How severe is CVE-2021-4089?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2021-4089 known to be exploited?

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

Auth bypass in Snipe Snipe/snipe-It

CVE-2021-4089

snipe-it is vulnerable to Improper Access Control

Published 2021-12-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Snipe Snipe/snipe-It — versions unspecified
Snipeitapp Snipe-It

Weakness classification (CWE)

Public proof-of-concept exploits

References

huntr.dev/bounties/19453ef1-4d77-4cff-b7e8-1bc8f3af0862 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/snipe/snipe-it/commit/1699c09758e56f740437674a8d6ba36443399f24 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-4089?: CVE-2021-4089 is a medium-severity vulnerability in Snipe Snipe/snipe-It, classified under Improper Access Control. CVSS score: 4.3/10. Published 2021-12-10.
How severe is CVE-2021-4089?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2021-4089 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.