How severe is CVE-2026-30839?

CVE-2026-30839 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-30839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30839?

CVE-2026-30839 affects Wallosapp Wallos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-30839?

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

Does CVE-2026-30839 have an EU (EUVD) identifier?

Yes. CVE-2026-30839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10119.

When was CVE-2026-30839 published?

CVE-2026-30839 was published on 2026-03-07 and last updated on 2026-06-17.

CVE-2026-30839

CVE-2026-30839 is a medium-severity vulnerability in Wallosapp Wallos with a CVSS 3.x base score of 4.3. 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 4.3)
CVSS v4: 5.3
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10119
Weakness: CWE-918
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, testwebhooknotifications.php does not validate the target URL against private/reserved IP ranges, enabling full-read SSRF. The server response is returned to the caller. This issue has been patched in version 4.6.2.

Frequently asked questions

What is CVE-2026-30839?: Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, testwebhooknotifications.php does not validate the target URL against private/reserved IP ranges, enabling full-read SSRF. The server response is returned to the caller. This issue has been patched in version 4.6.2.
How severe is CVE-2026-30839?: CVE-2026-30839 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-30839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30839?: CVE-2026-30839 affects Wallosapp Wallos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-30839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30839 have an EU (EUVD) identifier?: Yes. CVE-2026-30839 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10119.
When was CVE-2026-30839 published?: CVE-2026-30839 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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