CVE-2026-68581

🗓️ 02 Aug 2026 12:15:27Reported by VulnCheckType

cve🔗 web.nvd.nist.gov👁 81 Views🌐 WEB

Vikunja authentication bypass lets attackers use a colliding link-share token to access a target.

Reporter	Title	Published	Views	Family All 7
attackerkb	CVE-2026-68581	2 Aug 202612:15	–	attackerkb
Cvelist	CVE-2026-68581 Vikunja 0.22.0 through 2.3.0 Authentication Bypass via Principal ID Collision	2 Aug 202612:15	–	cvelist
EUVD	EUVD-2026-51991	2 Aug 202612:15	–	euvd
NVD	CVE-2026-68581	2 Aug 202613:16	–	nvd
Positive Technologies	PT-2026-67334	2 Aug 202600:00	–	ptsecurity
Rapid7 Vulnerability Database (full)	CVE-2026-68581: Incorrect Authorization	2 Aug 202600:00	–	rapid7
Vulnrichment	CVE-2026-68581 Vikunja 0.22.0 through 2.3.0 Authentication Bypass via Principal ID Collision	2 Aug 202612:15	–	vulnrichment

Vulners

CNA

Node

go-vikunja vikunjaRange0.22.0–2.4.0

[
  {
    "vendor": "go-vikunja",
    "product": "vikunja",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:golang/code.vikunja.io/api",
    "versions": [
      {
        "version": "0.22.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "2.4.0"
      }
    ]
  }
]

Source	Link
vulncheck	www.vulncheck.com/advisories/vikunja-through-authentication-bypass-via-principal-id-collision
github	www.github.com/go-vikunja/vikunja/commit/e6b25bd57b537ef9a72b5acdadf446ca5ef77bfa
github	www.github.com/go-vikunja/vikunja/commit/95b7e673fb5ee407498fa4b13e8b4c57847a4a0b
github	www.github.com/go-vikunja/vikunja/security/advisories/GHSA-vvcv-vpph-h844

Parameter	Position	Path	Description	CWE
Authorization	header	/api/v1/tokens	API token management allows a link-share JWT to be treated as a target user due to improper validation of the principal type (CWE-863), enabling listing, creation, and deletion of the target's API tokens.	CWE-863

08 Sep 2026 20:34Current

5.8Medium risk

Vulners AI Score5.8

CVSS 3.18.1

CVSS 48.6

EPSS0.00464

SSVC

CWE-863