How severe is CVE-2026-5209?

CVE-2026-5209 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-5209 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5209?

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

Does CVE-2026-5209 have an EU (EUVD) identifier?

Yes. CVE-2026-5209 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17587.

When was CVE-2026-5209 published?

CVE-2026-5209 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-5209

CVE-2026-5209 is a low-severity vulnerability with a CVSS 3.x base score of 2.4. 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: Low (CVSS 3.x base score 2.4)
CVSS v2: 3.3
CVSS v4: 1.9
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17587
Weakness: CWE-79
Published: 2026-03-31
Last modified: 2026-06-17

Description

A security vulnerability has been detected in SourceCodester Leave Application System 1.0. Affected by this issue is some unknown functionality of the component User Management Handler. Such manipulation 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-2026-5209?: A security vulnerability has been detected in SourceCodester Leave Application System 1.0. Affected by this issue is some unknown functionality of the component User Management Handler. Such manipulation 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-2026-5209?: CVE-2026-5209 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-5209 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5209?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5209 have an EU (EUVD) identifier?: Yes. CVE-2026-5209 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17587.
When was CVE-2026-5209 published?: CVE-2026-5209 was published on 2026-03-31 and last updated on 2026-06-17.

References

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