CVE-2026-91985

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Source
https://cve.org/CVERecord?id=CVE-2026-91985
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91985.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-91985
Aliases
  • GHSA-qfwc-vx6f-3g6g
Published
2026-09-15T15:18:28Z
Modified
2026-09-16T03:48:58Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Vikunja before 2.6.0 Privilege Escalation via Link Share Hash
Details

Vikunja before 2.6.0 fails to properly restrict access to the link-share hash field in single-share read endpoints, allowing read-only members to obtain the share's secret credential. Attackers can exchange the disclosed hash for a link-share JWT at the share's permission level to escalate privileges and perform unauthorized writes or administrative actions.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91985.json"
}
References

Affected packages

Git / github.com/go-vikunja/vikunja

Affected ranges

Type
GIT
Repo
https://github.com/go-vikunja/vikunja
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a4218eeb8fb3ada95e14a2331731524c9120d5bd
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.6.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.1
v0.10
v0.11
v0.12
v0.13
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.18.1
v0.19.0
v0.19.1
v0.19.2
v0.2
v0.20.0
v0.20.1
v0.20.3
v0.20.4
v0.21.0
v0.22.0
v0.22.1
v0.23.0
v0.24.1
v0.3
v0.4
v0.5
v0.6
v0.7
v0.8
v0.9
v1.*
v1.0.0
v1.0.0-rc0
v1.0.0-rc1
v1.0.0-rc2
v1.0.0-rc3
v1.0.0-rc4
v1.1.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.2.1
v2.2.2
v2.3.0
v2.4.0
v2.5.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91985.json"