Vulnerability details
CVE-2026-68558
Wekan: SSRF filter bypass via DNS-resolving hostname in outgoing webhooks (incomplete fix of CVE-2026-53446)
Official description
Wekan is open source kanban built with Meteor. From 8.36 until 9.74, the outgoing webhook Integration URL validator in models/integrations.js checked only the literal URL.hostname against regular expressions, so DNS names such as 169-254-169-254.nip.io passed that first-line check. The delivery path's fetchSafe guard already blocked the reported IPv4 destination, but its separate IPv4-only resolver and duplicated blocklist created inconsistent all-address-family enforcement and drift risk between input-time and connection-time validation. Version 9.74 makes server/lib/ssrfGuard.js resolve all addresses with `dns.lookup({ all: true })`, validate every result through the shared isIpBlocked logic, pin the connection, and block redirects. This issue is fixed in version 9.74.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.5High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| wekan | wekan | >= 8.36, < 9.74 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/wekan/wekan/commit/ef845fe4a0adb82af436313310939cd48c0b1347 x_refsource_MISC
- https://github.com/wekan/wekan/releases/tag/v9.74 x_refsource_MISC
- https://github.com/wekan/wekan/security/advisories/GHSA-66m2-4wfr-c45p x_refsource_CONFIRM
Details
- Published
- 2026-08-19
- Last updated
- 2026-08-19
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-918Server-Side Request Forgery (SSRF)