How severe is CVE-2026-4191?

CVE-2026-4191 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-4191 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4191?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-4191 have an EU (EUVD) identifier?

Yes. CVE-2026-4191 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12253.

When was CVE-2026-4191 published?

CVE-2026-4191 was published on 2026-03-16 and last updated on 2026-06-17.

CVE-2026-4191

CVE-2026-4191 is a high-severity vulnerability with a CVSS 3.x base score of 7.3. 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 5.5
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12253
Weakness: CWE-284
Published: 2026-03-16
Last modified: 2026-06-17

Description

A flaw has been found in JawherKl node-api-postgres up to 2.5. Affected is the function path.extname of the file index.js of the component Profile Picture Handler. This manipulation causes unrestricted upload. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-4191?: A flaw has been found in JawherKl node-api-postgres up to 2.5. Affected is the function path.extname of the file index.js of the component Profile Picture Handler. This manipulation causes unrestricted upload. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-4191?: CVE-2026-4191 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-4191 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4191?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-4191 have an EU (EUVD) identifier?: Yes. CVE-2026-4191 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12253.
When was CVE-2026-4191 published?: CVE-2026-4191 was published on 2026-03-16 and last updated on 2026-06-17.

References

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