How severe is CVE-2026-30840?

CVE-2026-30840 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-30840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30840?

CVE-2026-30840 affects Wallosapp Wallos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30840?

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-2026-30840 have an EU (EUVD) identifier?

Yes. CVE-2026-30840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10120.

When was CVE-2026-30840 published?

CVE-2026-30840 was published on 2026-03-07 and last updated on 2026-06-17.

CVE-2026-30840

CVE-2026-30840 is a high-severity vulnerability in Wallosapp Wallos with a CVSS 3.x base score of 8.8. 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-295.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10120
Weakness: CWE-295
Affected product: Wallosapp Wallos
Published: 2026-03-07
Last modified: 2026-06-17

Description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.

Frequently asked questions

What is CVE-2026-30840?: Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.
How severe is CVE-2026-30840?: CVE-2026-30840 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-30840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30840?: CVE-2026-30840 affects Wallosapp Wallos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30840?: 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-2026-30840 have an EU (EUVD) identifier?: Yes. CVE-2026-30840 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10120.
When was CVE-2026-30840 published?: CVE-2026-30840 was published on 2026-03-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wallosapp:wallos:*:*:*:*:*:*:*:*

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