CVE-2021-3309 json
packages/wekan-ldap/server/ldap.js in Wekan before 4.87 can process connections even though they are not authorized by the Certification Au…
published 2021-01-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26643
- cvss
- 8.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
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,
Patch / fix
- wekan_project wekan 4.87
Exploit prediction
1.72% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/wekan/wekan/issues/3482 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
github.com
/wekan/wekan/pull/3483/commits/31f89121fecca5a761b05cc3a26d4f237e90b484
patch, third-party-advisory
-
github.com
/wekan/wekan/issues/3482
exploit, issue-tracking, third-party-advisory
-
github.com
/wekan/wekan/releases/tag/v4.87
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-3309
- NVD CVE-2021-3309
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.