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CVE-2026-40481

Monetr denial of service

7.5 HIGHPublic exploitEPSS 0.63%
  1. Published17 Apr 2026

Description

monetr is a budgeting application for recurring expenses. In versions 1.12.3 and below, the public Stripe webhook endpoint buffers the entire request body into memory before validating the Stripe signature. A remote unauthenticated attacker can send oversized POST payloads to cause uncontrolled memory growth, leading to denial of service. The issue affects deployments with Stripe webhooks enabled and is mitigated if an upstream proxy enforces a request body size limit. This issue has been fixed in version 1.12.4.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Monetr< 1.12.4

Remediation

Fixed in
Monetr≥ 1.12.4

References

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Frequently asked

Is CVE-2026-40481 being actively exploited?

CVE-2026-40481 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.63%.

How severe is CVE-2026-40481?

CVE-2026-40481 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.63% probability of exploitation.

Which products are affected by CVE-2026-40481?

Affected products include Monetr.

How do I fix CVE-2026-40481?

Upgrade affected software to a fixed version, for example Monetr 1.12.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-40481 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.