CVE-2026-123520 (GCVE-0-2026-123520)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:37 – Updated: 2026-11-08 01:37
VLAI
Title
Vikunja 0.18.0 before 2.7.1 Privilege Escalation via Account Deletion
Summary
Vikunja from 0.18.0 before 2.7.1 contains a privilege escalation vulnerability that allows team owners to gain admin or ownership of read-only shared projects by deleting accounts. Attackers can create a bot, add it to their team, and delete it through the bots endpoint, triggering ensureProjectAdminUser to promote read-only shares and lock out the real owner.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
CWE
  • CWE-269 - Improper Privilege Management
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
go-vikunja vikunja Affected: 0.18.0 , < 2.7.1 (semver)
Unaffected: 2.7.1 (semver)
    cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-22 00:00
Credits
lissy93 dagadjno
Show details on NVD website
To clipboard 

{
  "containers": {
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        {
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          "packageURL": "pkg:golang/code.vikunja.io/api",
          "product": "vikunja",
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          "versions": [
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              "status": "affected",
              "version": "0.18.0",
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            },
            {
              "status": "unaffected",
              "version": "2.7.1",
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            }
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        }
      ],
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                  "vulnerable": true
                }
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              "negate": false,
              "operator": "OR"
            }
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          "type": "reporter",
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      "datePublic": "2026-10-22T00:00:00.000Z",
      "descriptions": [
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        }
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      "metrics": [
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            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS"
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      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "Improper Privilege Management",
              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2026-11-08T01:37:31.078Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-hq66-9qg8-jwqg)",
          "tags": [
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          ],
          "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-hq66-9qg8-jwqg"
        },
        {
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          "tags": [
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        }
      ],
      "title": "Vikunja 0.18.0 before 2.7.1 Privilege Escalation via Account Deletion",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-123520",
    "datePublished": "2026-11-08T01:37:31.078Z",
    "dateReserved": "2026-11-06T00:47:14.649Z",
    "dateUpdated": "2026-11-08T01:37:31.078Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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