CVE-2026-75841 ArcadeData CVE debrief

Who should care

Defenders and administrators of ArcadeDB instances should assess exposure and prioritize verification and remediation. They should also consider restricting authenticated user input and monitoring server performance to prevent potential service degradation. Additionally, security teams and vulnerability management teams should review the vulnerability and plan for potential impacts on server performance and stability.

Why it matters

CVE-2026-75841 is a medium-severity denial-of-service vulnerability in ArcadeDB that allows authenticated users to exhaust server heap memory. Defenders should prioritize verifying ArcadeDB versions, restricting authenticated user input, and monitoring server performance to prevent potential service degradation.

• Potential temporary service degradation or unavailability due to OutOfMemoryError
• Need to verify ArcadeDB version and restrict authenticated user input
• Possible impact on server performance and stability

Technical summary

CVE-2026-75841 is a denial-of-service vulnerability in ArcadeDB before 26.8.1, allowing authenticated users to exhaust server heap memory via oversized range() expressions in the Cypher range() function. This could lead to temporary service degradation or unavailability. The vulnerability has a CVSS score of 5.3 and is classified as MEDIUM severity. Defenders should prioritize verifying ArcadeDB versions and restricting authenticated user input to prevent potential denial-of-service attacks. The CVE record was published on 2026-08-18T12:19:34.463Z.

Defensive priority

Defenders should prioritize verifying ArcadeDB versions and restricting authenticated user input to prevent potential denial-of-service attacks.

Recommended defensive actions

• Verify ArcadeDB version and upgrade to 26.8.1 or later if necessary
• Restrict authenticated user input to prevent oversized range() expressions
• Monitor server heap memory usage for unusual patterns
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry indicate a denial-of-service vulnerability in ArcadeDB before 26.8.1, allowing authenticated users to exhaust server heap memory via oversized range() expressions. The vulnerability has a CVSS score of 5.3 and a MEDIUM severity. There are no known exploit details, but defenders should verify ArcadeDB versions and restrict authenticated user input to prevent potential denial-of-service attacks.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.