How severe is CVE-2026-33401?

CVE-2026-33401 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-33401 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33401?

CVE-2026-33401 affects Wallosapp Wallos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33401?

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

Does CVE-2026-33401 have an EU (EUVD) identifier?

Yes. CVE-2026-33401 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14947.

When was CVE-2026-33401 published?

CVE-2026-33401 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33401

CVE-2026-33401 is a medium-severity vulnerability in Wallosapp Wallos with a CVSS 3.x base score of 6.5. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14947
Weakness: CWE-918
Affected product: Wallosapp Wallos
Published: 2026-03-24
Last modified: 2026-06-17

Description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the patch introduced in commit e8a513591 (CVE-2026-30840) added SSRF protection to notification test endpoints but left three additional attack surfaces unprotected: the AI Ollama host parameter, the AI recommendations endpoint, and the notification cron job. An authenticated user can reach internal network services, cloud metadata endpoints (AWS IMDSv1, GCP, Azure IMDS), or localhost-bound services by supplying a crafted URL to any of these endpoints. This issue has been patched in version 4.7.0.

Frequently asked questions

What is CVE-2026-33401?: Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the patch introduced in commit e8a513591 (CVE-2026-30840) added SSRF protection to notification test endpoints but left three additional attack surfaces unprotected: the AI Ollama host parameter, the AI recommendations endpoint, and the notification cron job. An authenticated user can reach internal network services, cloud metadata endpoints (AWS IMDSv1, GCP, Azure IMDS), or localhost-bound services by supplying a crafted URL to any of these endpoints. This issue has been patched in version 4.7.0.
How severe is CVE-2026-33401?: CVE-2026-33401 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-33401 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33401?: CVE-2026-33401 affects Wallosapp Wallos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33401?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33401 have an EU (EUVD) identifier?: Yes. CVE-2026-33401 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14947.
When was CVE-2026-33401 published?: CVE-2026-33401 was published on 2026-03-24 and last updated on 2026-06-17.

References

Affected products (1)

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

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