CVE-2021-3309

CVE-2021-3309 is a high-severity vulnerability in Wekan Project Wekan with a CVSS 3.x base score of 8.1. 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-295.

Key facts

Description

packages/wekan-ldap/server/ldap.js in Wekan before 4.87 can process connections even though they are not authorized by the Certification Authority trust store,

Frequently asked questions

What is CVE-2021-3309?
packages/wekan-ldap/server/ldap.js in Wekan before 4.87 can process connections even though they are not authorized by the Certification Authority trust store,
How severe is CVE-2021-3309?
CVE-2021-3309 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-3309 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3309?
CVE-2021-3309 affects Wekan Project Wekan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3309?
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.
When was CVE-2021-3309 published?
CVE-2021-3309 was published on 2021-01-26 and last updated on 2026-06-17.

References

Affected products (1)

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