How severe is CVE-2026-3993?

CVE-2026-3993 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-3993 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-3993?

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

Does CVE-2026-3993 have an EU (EUVD) identifier?

Yes. CVE-2026-3993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11536.

When was CVE-2026-3993 published?

CVE-2026-3993 was published on 2026-03-12 and last updated on 2026-06-17.

CVE-2026-3993

CVE-2026-3993 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11536
Weakness: CWE-79
Published: 2026-03-12
Last modified: 2026-06-17

Description

A security vulnerability has been detected in itsourcecode Payroll Management System 1.0. This vulnerability affects unknown code of the file /manage_employee_deductions.php. Such manipulation of the argument ID leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.

Frequently asked questions

What is CVE-2026-3993?: A security vulnerability has been detected in itsourcecode Payroll Management System 1.0. This vulnerability affects unknown code of the file /manage_employee_deductions.php. Such manipulation of the argument ID leads to cross site scripting. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.
How severe is CVE-2026-3993?: CVE-2026-3993 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-3993 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-3993?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3993 have an EU (EUVD) identifier?: Yes. CVE-2026-3993 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11536.
When was CVE-2026-3993 published?: CVE-2026-3993 was published on 2026-03-12 and last updated on 2026-06-17.

References

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