How severe is CVE-2026-27575?

CVE-2026-27575 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-27575 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27575?

CVE-2026-27575 affects Vikunja. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27575?

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

Does CVE-2026-27575 have an EU (EUVD) identifier?

Yes. CVE-2026-27575 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8751.

When was CVE-2026-27575 published?

CVE-2026-27575 was published on 2026-02-25 and last updated on 2026-06-17.

CVE-2026-27575

CVE-2026-27575 is a critical-severity vulnerability in Vikunja with a CVSS 3.x base score of 9.1. 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-521.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-8751
Weakness: CWE-521
Affected product: Vikunja
Published: 2026-02-25
Last modified: 2026-06-17

Description

Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.

Frequently asked questions

What is CVE-2026-27575?: Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.
How severe is CVE-2026-27575?: CVE-2026-27575 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-27575 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27575?: CVE-2026-27575 affects Vikunja. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27575?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-27575 have an EU (EUVD) identifier?: Yes. CVE-2026-27575 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-8751.
When was CVE-2026-27575 published?: CVE-2026-27575 was published on 2026-02-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*

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