How severe is CVE-2026-1126?

CVE-2026-1126 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-1126 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-1126?

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

Does CVE-2026-1126 have an EU (EUVD) identifier?

Yes. CVE-2026-1126 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3170.

When was CVE-2026-1126 published?

CVE-2026-1126 was published on 2026-01-18 and last updated on 2026-06-17.

CVE-2026-1126

CVE-2026-1126 is a medium-severity vulnerability with a CVSS 3.x base score of 6.3. 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: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3170
Weakness: CWE-284
Published: 2026-01-18
Last modified: 2026-06-17

Description

A security vulnerability has been detected in lwj flow up to a3d2fe8133db9d3b50fda4f66f68634640344641. This affects the function uploadFile of the file \flow-master\flow-front-rest\src\main\java\com\dragon\flow\web\resource\flow\FormResource.java of the component SVG File Handler. The manipulation of the argument File leads to unrestricted upload. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.

Frequently asked questions

What is CVE-2026-1126?: A security vulnerability has been detected in lwj flow up to a3d2fe8133db9d3b50fda4f66f68634640344641. This affects the function uploadFile of the file \flow-master\flow-front-rest\src\main\java\com\dragon\flow\web\resource\flow\FormResource.java of the component SVG File Handler. The manipulation of the argument File leads to unrestricted upload. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.
How severe is CVE-2026-1126?: CVE-2026-1126 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-1126 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-1126?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1126 have an EU (EUVD) identifier?: Yes. CVE-2026-1126 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3170.
When was CVE-2026-1126 published?: CVE-2026-1126 was published on 2026-01-18 and last updated on 2026-06-17.

References

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