How severe is CVE-2026-5331?

CVE-2026-5331 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-5331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5331?

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

Does CVE-2026-5331 have an EU (EUVD) identifier?

Yes. CVE-2026-5331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18216.

When was CVE-2026-5331 published?

CVE-2026-5331 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-5331

CVE-2026-5331 is a medium-severity vulnerability with a CVSS 3.x base score of 4.7. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 5.8
CVSS v4: 2.0
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18216
Weakness: CWE-22
Published: 2026-04-02
Last modified: 2026-06-17

Description

A vulnerability was determined in OpenCart 4.1.0.3. This affects an unknown part of the file installer.php of the component Extension Installer Page. Executing a manipulation can lead to path traversal. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-5331?: A vulnerability was determined in OpenCart 4.1.0.3. This affects an unknown part of the file installer.php of the component Extension Installer Page. Executing a manipulation can lead to path traversal. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-5331?: CVE-2026-5331 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-5331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5331 have an EU (EUVD) identifier?: Yes. CVE-2026-5331 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18216.
When was CVE-2026-5331 published?: CVE-2026-5331 was published on 2026-04-02 and last updated on 2026-06-17.

References

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