CVE-2026-33675
Vikunja has SSRF via Todoist/Trello Migration File Attachment URLs that Allows Reading Internal Network Resources
Description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the migration helper functions `DownloadFile` and `DownloadFileWithHeaders` in `pkg/modules/migration/helpers.go` make arbitrary HTTP GET requests without any SSRF protection. When a user triggers a Todoist or Trello migration, file attachment URLs from the third-party API response are passed directly to these functions, allowing an attacker to force the Vikunja server to fetch internal network resources and return the response as a downloadable task attachment. Version 2.2.1 patches the issue.
INFO
Published Date :
March 24, 2026, 4:16 p.m.
Last Modified :
March 27, 2026, 4:20 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Vikunja to version 2.2.1.
- Ensure migration helper functions are secured.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33675.
| URL | Resource |
|---|---|
| https://github.com/go-vikunja/vikunja/commit/93297742236e3d33af72c993e5da960db01d259e | Patch |
| https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr | Exploit Vendor Advisory |
| https://vikunja.io/changelog/vikunja-v2.2.2-was-released | Release Notes |
| https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33675 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33675
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33675 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33675 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L Added CPE Configuration OR *cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:* versions up to (excluding) 2.2.1 Added Reference Type GitHub, Inc.: https://github.com/go-vikunja/vikunja/commit/93297742236e3d33af72c993e5da960db01d259e Types: Patch Added Reference Type CISA-ADP: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://vikunja.io/changelog/vikunja-v2.2.2-was-released Types: Release Notes -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Mar. 24, 2026
Action Type Old Value New Value Added Reference https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr -
New CVE Received by [email protected]
Mar. 24, 2026
Action Type Old Value New Value Added Description Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, the migration helper functions `DownloadFile` and `DownloadFileWithHeaders` in `pkg/modules/migration/helpers.go` make arbitrary HTTP GET requests without any SSRF protection. When a user triggers a Todoist or Trello migration, file attachment URLs from the third-party API response are passed directly to these functions, allowing an attacker to force the Vikunja server to fetch internal network resources and return the response as a downloadable task attachment. Version 2.2.1 patches the issue. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L Added CWE CWE-918 Added Reference https://github.com/go-vikunja/vikunja/commit/93297742236e3d33af72c993e5da960db01d259e Added Reference https://github.com/go-vikunja/vikunja/security/advisories/GHSA-g66v-54v9-52pr Added Reference https://vikunja.io/changelog/vikunja-v2.2.2-was-released