CVE-2026-71403

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-71403
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71403.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-71403
Published
2026-09-03T14:45:37.468Z
Modified
2026-09-05T03:48:04.707402148Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Rancher: Identity-field mutation in /v3/users allows account hijack via principal rebind
Details

A flaw was found in Rancher Manager. The /v3/users update path did not enforce immutability of a User resource's username and principalIds fields. A user holding the update verb on users.management.cattle.io could inject a foreign identity provider principal into any account, so that the next login by the owner of that principal was bound to the victim's account and inherited its role bindings.

This issue affects Rancher: before 2.15.1.

Database specific 
{
    "cwe_ids": [
        "CWE-639"
    ],
    "cna_assigner": "suse",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71403.json"
}
References

Affected packages

Git / github.com/rancher/rancher

Affected ranges

Type
GIT
Repo
https://github.com/rancher/rancher
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8c257d748d23d4812092e28cc92b2a6f3e4dd594
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.15.1"
        }
    ]
}

Affected versions

v2.*
v2.0.0
v2.0.0-alpha11
v2.0.0-alpha12
v2.0.0-alpha14
v2.0.0-alpha17
v2.0.0-alpha18
v2.0.0-alpha19
v2.0.0-alpha20
v2.0.0-alpha21
v2.0.0-alpha22
v2.0.0-alpha23
v2.0.0-alpha24
v2.0.0-alpha25
v2.0.0-alpha26
v2.0.0-alpha27
v2.0.0-alpha28
v2.0.0-beta1
v2.0.0-beta2
v2.0.0-beta3
v2.0.0-beta3-rc1
v2.0.0-beta4
v2.0.0-beta4-rc1
v2.0.0-beta4-rc2
v2.0.0-beta4-rc3
v2.0.0-beta4-rc4
v2.0.0-rc1
v2.0.0-rc2
v2.0.0-rc3
v2.0.0-rc4
v2.0.0-rc5
v2.0.1
v2.0.1-rc1
v2.0.1-rc2
v2.0.1-rc3
v2.0.1-rc4
v2.0.1-rc5
v2.0.1-rc6
v2.0.2
v2.0.2-rc1
v2.0.3
v2.0.3-rc1
v2.0.3-rc2
v2.0.3-rc3
v2.0.3-rc4
v2.0.3-rc5
v2.0.4
v2.0.4-rc1
v2.0.5
v2.0.5-rc1
v2.0.5-rc2
v2.0.5-rc3
v2.0.5-rc4
v2.0.5-rc5
v2.0.5-rc6
v2.0.6
v2.0.6-rc1
v2.0.6-rc2
v2.0.7
v2.0.7-rc1
v2.0.7-rc2
v2.0.7-rc3
v2.0.7-rc4
v2.0.7-rc5
v2.0.7-rc6
v2.0.8-rc2
v2.1.0
v2.1.0-rc1
v2.1.0-rc10
v2.1.0-rc2
v2.1.0-rc3
v2.1.0-rc4
v2.1.0-rc5
v2.1.0-rc6
v2.1.0-rc7
v2.1.0-rc8
v2.1.0-rc9
v2.10.0-alpha1
v2.10.0-alpha10
v2.10.0-alpha2
v2.10.0-alpha3
v2.10.0-alpha4
v2.10.0-alpha5
v2.10.0-alpha6
v2.10.0-alpha7
v2.10.0-alpha8
v2.10.0-alpha9
v2.11.0-alpha1
v2.11.0-alpha10
v2.11.0-alpha11
v2.11.0-alpha12
v2.11.0-alpha13
v2.11.0-alpha2
v2.11.0-alpha3
v2.11.0-alpha4
v2.11.0-alpha5
v2.11.0-alpha6
v2.11.0-alpha7
v2.11.0-alpha8
v2.11.0-alpha9
v2.12.0-alpha1
v2.12.0-alpha10
v2.12.0-alpha11
v2.12.0-alpha12
v2.12.0-alpha13
v2.12.0-alpha14
v2.12.0-alpha15
v2.12.0-alpha16
v2.12.0-alpha17
v2.12.0-alpha18
v2.12.0-alpha19
v2.12.0-alpha2
v2.12.0-alpha20
v2.12.0-alpha3
v2.12.0-alpha4
v2.12.0-alpha5
v2.12.0-alpha6
v2.12.0-alpha7
v2.12.0-alpha8
v2.12.0-alpha9
v2.12.0-hotfix-b112.1
v2.12.0-rc1
v2.13.0-alpha1
v2.13.0-alpha2
v2.13.0-alpha3
v2.13.0-alpha4
v2.13.0-alpha5
v2.13.0-alpha6
v2.14.0-alpha1
v2.14.0-alpha10
v2.14.0-alpha2
v2.14.0-alpha3
v2.14.0-alpha4
v2.14.0-alpha5
v2.14.0-alpha6
v2.14.0-alpha7
v2.14.0-alpha8
v2.14.0-alpha9
v2.15.0
v2.15.0-alpha1
v2.15.0-alpha10
v2.15.0-alpha11
v2.15.0-alpha12
v2.15.0-alpha13
v2.15.0-alpha14
v2.15.0-alpha15
v2.15.0-alpha16
v2.15.0-alpha17
v2.15.0-alpha18
v2.15.0-alpha19
v2.15.0-alpha2
v2.15.0-alpha22
v2.15.0-alpha3
v2.15.0-alpha4
v2.15.0-alpha5
v2.15.0-alpha6
v2.15.0-alpha7
v2.15.0-alpha8
v2.15.0-alpha9
v2.15.0-rc1
v2.15.0-rc2
v2.15.0-rc3
v2.15.0-rc4
v2.15.0-rc5
v2.15.1-alpha1
v2.15.1-rc1
v2.15.1-rc2
v2.2.0
v2.2.0-rc1
v2.2.0-rc10
v2.2.0-rc11
v2.2.0-rc12
v2.2.0-rc13
v2.2.0-rc14
v2.2.0-rc15
v2.2.0-rc2
v2.2.0-rc3
v2.2.0-rc4
v2.2.0-rc5
v2.2.0-rc6
v2.2.0-rc7
v2.2.0-rc8
v2.2.0-rc9
v2.3.0-alpha4
v2.3.0-alpha5
v2.3.0-alpha6
v2.3.0-alpha7
v2.3.0-rc1
v2.3.0-rc10
v2.3.0-rc2
v2.3.0-rc3
v2.3.0-rc4
v2.3.0-rc5
v2.3.0-rc6
v2.3.0-rc7
v2.3.0-rc8
v2.3.0-rc9
v2.3.7-draft
v2.4.0-alpha1
v2.4.0-rc1
v2.4.0-rc10
v2.4.0-rc11
v2.4.0-rc2
v2.4.0-rc3
v2.4.0-rc4
v2.4.0-rc5
v2.4.0-rc6
v2.4.0-rc7
v2.4.0-rc8
v2.4.0-rc9
v2.5.0-alpha1
v2.5.0-alpha2
v2.5.0-alpha3
v2.5.0-alpha4
v2.5.0-alpha5
v2.5.0-rc1
v2.5.0-rc2
v2.5.0-rc3
v2.5.0-rc4
v2.6.0
v2.6.0-rc1
v2.6.0-rc10
v2.6.0-rc2
v2.6.0-rc3
v2.6.0-rc4
v2.6.0-rc5
v2.6.0-rc6
v2.6.0-rc7
v2.6.0-rc8
v2.6.0-rc9
v2.6.1
v2.6.1-harvester1
v2.6.1-harvester2
v2.6.1-rc1
v2.6.1-rc10
v2.6.1-rc11
v2.6.1-rc12
v2.6.1-rc13
v2.6.1-rc2
v2.6.1-rc3
v2.6.1-rc4
v2.6.1-rc5
v2.6.1-rc6
v2.6.1-rc7
v2.6.1-rc8
v2.6.1-rc9
v2.6.3
v2.6.3-harvester1
v2.6.3-rc1
v2.6.3-rc10
v2.6.3-rc11
v2.6.3-rc2
v2.6.3-rc3
v2.6.3-rc4
v2.6.3-rc5
v2.6.3-rc6
v2.6.3-rc7
v2.6.3-rc8
v2.6.3-rc9
v2.6.4-alpha1
v2.6.4-alpha2
v2.6.4-alpha3
v2.6.4-rc1
v2.6.4-rc10
v2.6.4-rc11
v2.6.4-rc12
v2.6.4-rc13
v2.6.4-rc2
v2.6.4-rc3
v2.6.4-rc4
v2.6.4-rc5
v2.6.4-rc6
v2.6.4-rc8
v2.6.4-rc9
v2.6.5
v2.6.5-alpha1
v2.6.5-rc1
v2.6.5-rc10
v2.6.5-rc11
v2.6.5-rc12
v2.6.5-rc2
v2.6.5-rc3
v2.6.5-rc4
v2.6.5-rc5
v2.6.5-rc6
v2.6.5-rc8
v2.6.5-rc9
v2.6.6-rc1
v2.6.7
v2.6.7-rc1
v2.6.7-rc10
v2.6.7-rc2
v2.6.7-rc3
v2.6.7-rc4
v2.6.7-rc5
v2.6.7-rc6
v2.6.7-rc7
v2.6.7-rc8
v2.6.7-rc9
v2.6.8-rc2
v2.6.8-rc3
v2.7.0
v2.7.0-novkdm
v2.7.0-rc1
v2.7.0-rc10
v2.7.0-rc11
v2.7.0-rc12
v2.7.0-rc2
v2.7.0-rc3
v2.7.0-rc4
v2.7.0-rc5
v2.7.0-rc6
v2.7.0-rc7
v2.7.0-rc8
v2.7.0-rc9
v2.7.2
v2.7.2-rc1
v2.7.2-rc10
v2.7.2-rc2
v2.7.2-rc3
v2.7.2-rc4
v2.7.2-rc5
v2.7.2-rc6
v2.7.2-rc7
v2.7.2-rc8
v2.7.2-rc9
v2.7.5
v2.7.5-rc1
v2.7.5-rc2
v2.7.5-rc3
v2.7.5-rc4
v2.7.5-rc5
v2.7.5-rc6
v2.7.7-rc1
v2.7.7-rc2
v2.8.0
v2.8.0-alpha1
v2.8.0-alpha2
v2.8.0-rc1
v2.8.0-rc2
v2.8.0-rc3
v2.8.0-rc4
v2.8.0-rc5
v2.9.0
v2.9.0-alpha1
v2.9.0-alpha2
v2.9.0-alpha3
v2.9.0-alpha4
v2.9.0-alpha5
v2.9.0-alpha6
v2.9.0-alpha7
v2.9.0-alpha8
v2.9.0-rc1
v2.9.0-rc2
v2.9.0-rc3
v2.9.0-rc4
v2.9.0-rc5
v2.9.0-rc6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71403.json"