How severe is CVE-2026-5666?

CVE-2026-5666 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-5666 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5666?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-5666 have an EU (EUVD) identifier?

Yes. CVE-2026-5666 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19364.

When was CVE-2026-5666 published?

CVE-2026-5666 was published on 2026-04-06 and last updated on 2026-06-17.

CVE-2026-5666

CVE-2026-5666 is a medium-severity vulnerability with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 5.5
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19364
Weakness: CWE-200
Published: 2026-04-06
Last modified: 2026-06-17

Description

A vulnerability was detected in code-projects Online FIR System 1.0. Affected by this issue is some unknown functionality of the file /complaints.sql of the component SQL Database Backup File Handler. The manipulation results in insecure storage of sensitive information. The attack may be performed from remote. The exploit is now public and may be used.

Frequently asked questions

What is CVE-2026-5666?: A vulnerability was detected in code-projects Online FIR System 1.0. Affected by this issue is some unknown functionality of the file /complaints.sql of the component SQL Database Backup File Handler. The manipulation results in insecure storage of sensitive information. The attack may be performed from remote. The exploit is now public and may be used.
How severe is CVE-2026-5666?: CVE-2026-5666 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-5666 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5666?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5666 have an EU (EUVD) identifier?: Yes. CVE-2026-5666 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19364.
When was CVE-2026-5666 published?: CVE-2026-5666 was published on 2026-04-06 and last updated on 2026-06-17.

References

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