How severe is CVE-2020-15906?

CVE-2020-15906 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2020-15906 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15906?

CVE-2020-15906 affects Tiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15906?

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.

When was CVE-2020-15906 published?

CVE-2020-15906 was published on 2020-10-22 and last updated on 2026-06-17.

CVE-2020-15906

CVE-2020-15906 is a critical-severity vulnerability in Tiki with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-307.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 27% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Tiki
Published: 2020-10-22
Last modified: 2026-06-17

Description

tiki-login.php in Tiki before 21.2 sets the admin password to a blank value after 50 invalid login attempts.

Frequently asked questions

What is CVE-2020-15906?: tiki-login.php in Tiki before 21.2 sets the admin password to a blank value after 50 invalid login attempts.
How severe is CVE-2020-15906?: CVE-2020-15906 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2020-15906 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15906?: CVE-2020-15906 affects Tiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15906?: 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.
When was CVE-2020-15906 published?: CVE-2020-15906 was published on 2020-10-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:tiki:tiki:*:*:*:*:*:*:*:*

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