CVE-2026-107588

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.1% of scored records. A rank, not a probability.

NVD base score

8.4 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-22.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-21 18:22Z7 DAYS AGO

Last updated

2026-10-21 18:22Z7 DAYS AGO

Reserved

2026-10-08

Assigning CNA

Vaadin

Record state

PUBLISHED

Severity

High (CVSS 8.4)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
• CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')Variant

Data version

5.2

Document digest

e528582f92988bd459c9647b4ea188309cbce48fcf6bfb33327a8e33572ea993

• vaadin.comhttps://vaadin.com/security/cve-2026-107588
• github.comhttps://github.com/highcharts/highcharts/security/advisories/GHSA-rmqc-xvr3-v46c
• github.comhttps://github.com/highcharts/highcharts/security/advisories/GHSA-5793-x2q3-c3q7
• github.comhttps://github.com/highcharts/highcharts/security/advisories/GHSA-35rr-xwfh-x789
• github.comhttps://github.com/highcharts/highcharts/security/advisories/GHSA-65hg-cf3f-5m39
• github.comhttps://github.com/highcharts/highcharts/security/advisories/GHSA-mw4f-gj5x-6xr4
• github.comhttps://github.com/highcharts/highcharts/security/advisories/GHSA-gfvx-2c2g-38wq
• github.comhttps://github.com/vaadin/web-components/pull/12886
• github.comhttps://github.com/vaadin/web-components/pull/12887
• github.comhttps://github.com/vaadin/web-components/pull/12897
• github.comhttps://github.com/vaadin/web-components/pull/12898
• github.comhttps://github.com/vaadin/web-components/pull/12899
• github.comhttps://github.com/vaadin/web-components/pull/12900
• github.comhttps://github.com/vaadin/web-components/pull/12901
• github.comhttps://github.com/vaadin/web-components/pull/12918
• github.comhttps://github.com/vaadin/web-components/pull/12919
• github.comhttps://github.com/vaadin/flow-components/pull/10283
• github.comhttps://github.com/vaadin/flow-components/pull/10284
• github.comhttps://github.com/vaadin/flow-components/pull/10285
• github.comhttps://github.com/vaadin/flow-components/pull/10290
• github.comhttps://github.com/vaadin/flow-components/pull/10291
• github.comhttps://github.com/vaadin/flow-components/pull/10292
• github.comhttps://github.com/vaadin/flow-components/pull/10293
• github.comhttps://github.com/vaadin/flow-components/pull/10299
• github.comhttps://github.com/vaadin/flow-components/pull/10300