How severe is CVE-2026-40481?

CVE-2026-40481 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-40481 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40481?

CVE-2026-40481 affects Monetr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40481?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40481 have an EU (EUVD) identifier?

Yes. CVE-2026-40481 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23591.

When was CVE-2026-40481 published?

CVE-2026-40481 was published on 2026-04-17 and last updated on 2026-06-17.

CVE-2026-40481

CVE-2026-40481 is a high-severity vulnerability in Monetr with a CVSS 3.x base score of 7.5. 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.2
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23591
Weakness: CWE-400
Affected product: Monetr
Published: 2026-04-17
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-40481?: 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.
How severe is CVE-2026-40481?: CVE-2026-40481 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-40481 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40481?: CVE-2026-40481 affects Monetr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40481?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40481 have an EU (EUVD) identifier?: Yes. CVE-2026-40481 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23591.
When was CVE-2026-40481 published?: CVE-2026-40481 was published on 2026-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:monetr:monetr:*:*:*:*:*:*:*:*

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