No exploitation reportedFix available

CVE-2022-21666

Q: Is CVE-2022-21666 actively exploited?

Active exploitation of CVE-2022-21666 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-21666?

CVE-2022-21666 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2022-01-10
Fixed inpb2.4bfx3
WeaknessCWE-89

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Useful Simple Open-Source CMS (USOC) is a content management system (CMS) for programmers. Versions prior to Pb2.4Bfx3 allowed Sql injection in usersearch.php only for users with administrative privileges. Users should replace the file `admin/pages/useredit.php` with a newer version. USOC version Pb2.4Bfx3 contains a fixed version of `admin/pages/useredit.php`.

Timeline

dates in UTC

2022-01-1020:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-21666?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-21666?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Useful simple open-source cms project useful simple open-source cms

Branch	Affected	Fixed in	Source
—	< pb2.4bfx3	pb2.4bfx3	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Useful simple open-source cms project useful simple open-source cms to pb2.4bfx3

Advisories and patches

github.comPatch
github.comRelease Notes

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-04-23
OpenCVESSVC decisionnone—
CNACVSS 3.17.2read 2026-10-23
NVDCVSS 3.17.2read 2026-10-23
NVDCVSS 2.06.5read 2026-10-23
CNAweakness (CWE)CWE-89read 2026-10-23
NVDweakness (CWE)CWE-89read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published: 2022-01-10
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-21666?

Is CVE-2022-21666 actively exploited?

Active exploitation of CVE-2022-21666 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-21666?

CVE-2022-21666 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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