How severe is CVE-2026-40608?

CVE-2026-40608 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-40608 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40608?

CVE-2026-40608 affects Dayuanjiang Next Ai Draw.io. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40608?

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

Does CVE-2026-40608 have an EU (EUVD) identifier?

Yes. CVE-2026-40608 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24217.

When was CVE-2026-40608 published?

CVE-2026-40608 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2026-40608

CVE-2026-40608 is a medium-severity vulnerability in Dayuanjiang Next Ai Draw.io with a CVSS 3.x base score of 6.2. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24217
Weakness: CWE-770
Affected product: Dayuanjiang Next Ai Draw.io
Published: 2026-04-21
Last modified: 2026-06-17

Description

Next AI Draw.io is a next.js web application that integrates AI capabilities with draw.io diagrams. Prior to 0.4.15, the embedded HTTP sidecar contains three POST handlers (/api/state, /api/restore, and /api/history-svg) that process incoming requests by accumulating the entire request body into a JavaScript string without any size limitations. Node.js buffers the entire payload in the V8 heap. Sending a sufficiently large body (e.g., 500 MiB or more) will exhaust the process heap memory, leading to an Out-of-Memory (OOM) error that crashes the MCP server. This vulnerability is fixed in 0.4.15.

Frequently asked questions

What is CVE-2026-40608?: Next AI Draw.io is a next.js web application that integrates AI capabilities with draw.io diagrams. Prior to 0.4.15, the embedded HTTP sidecar contains three POST handlers (/api/state, /api/restore, and /api/history-svg) that process incoming requests by accumulating the entire request body into a JavaScript string without any size limitations. Node.js buffers the entire payload in the V8 heap. Sending a sufficiently large body (e.g., 500 MiB or more) will exhaust the process heap memory, leading to an Out-of-Memory (OOM) error that crashes the MCP server. This vulnerability is fixed in 0.4.15.
How severe is CVE-2026-40608?: CVE-2026-40608 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-40608 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40608?: CVE-2026-40608 affects Dayuanjiang Next Ai Draw.io. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40608?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40608 have an EU (EUVD) identifier?: Yes. CVE-2026-40608 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24217.
When was CVE-2026-40608 published?: CVE-2026-40608 was published on 2026-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dayuanjiang:next_ai_draw.io:*:*:*:*:*:*:*:*

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