---
title: "CVE-2026-68582: Vikunja: Link-share token reads any tenant's kanban buckets and enumerates usernames/IDs instance-wide (BOLA)"
url: https://erroneo.us/security/cve/CVE-2026-68582/
description: "CVE-2026-68582 (code.vikunja.io/api (Go)): Vikunja versions >= 0.24.0 and"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-08-02
date_modified: 2026-10-09
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-68582"
kev: false
cvss: 9.3
epss: 0.00267
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-68582: Vikunja: Link-share token reads any tenant's kanban buckets and enumerates usernames/IDs instance-wide (BOLA)

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.3% , percentile 18: FIRST’s model estimates a 0.3% chance of exploitation activity in the next 30 days, higher than 18% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes code.vikunja.io/api (Go) >= 0.24.0, <= 2.3.0, fixed in 2.4.0 . Check your lockfile, including transitive dependencies.

## What it is

Vikunja versions >= 0.24.0 and

## Affected packages

- Go `code.vikunja.io/api` >= 0.24.0, <= 2.3.0 → fixed: 2.4.0

## Affected products (CVE record)

- go-vikunja vikunja: 0.24.0 < 2.4.0

## Severity

- VulnCheck CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
- VulnCheck CVSS 3.1: 6.5 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.27% probability of exploitation activity in the next 30 days; percentile 18.

## Sources

- [GitHub Security Advisory (GHSA-rj9j-8772-4h6c)](https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj9j-8772-4h6c)
- [GitHub Advisory GHSA-rj9j-8772-4h6c](https://github.com/advisories/GHSA-rj9j-8772-4h6c)
- [CVE.org record CVE-2026-68582](https://www.cve.org/CVERecord?id=CVE-2026-68582)
- [NVD entry CVE-2026-68582](https://nvd.nist.gov/vuln/detail/CVE-2026-68582)
- [VulnCheck Advisory: Vikunja 0.24.0 Broken Object Level Authorization via Link-Share Token](https://www.vulncheck.com/advisories/vikunja-broken-object-level-authorization-via-link-share-token)
- [github.com](https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0)

---
Source page: https://erroneo.us/security/cve/CVE-2026-68582/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt