CVE-2026-67204

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Source

https://cve.org/CVERecord?id=CVE-2026-67204

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67204.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-67204

Published

2026-08-24T15:33:13.649Z

Modified

2026-08-30T11:45:15.712113908Z

Severity

5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

BookStack < 26.05.4 Broken Access Control via Image Gallery API

Details

BookStack before 26.05.4 contains a broken access control vulnerability that allows authenticated API users with image-update or image-delete permissions to manipulate other users' avatars by exploiting missing content-type restrictions in the Image Gallery API endpoints. Attackers can supply a user avatar's ID to the API controller, which loads any image type without the web controller's gallery and drawio restrictions, and when the avatar's uploaded_to field matches a page ID accessible to the attacker, the authorization check passes allowing the attacker to rename, replace, or delete the target user's avatar without requiring user-management permission.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67204.json",
    "cwe_ids": [
        "CWE-863"
    ],
    "cna_assigner": "VulnCheck"
}

References

Affected packages

Git / github.com/bookstackapp/bookstack

Affected ranges

Type

GIT

Repo

https://github.com/bookstackapp/bookstack

Events

Introduced

Fixed

cec78b1bcf096a74bf0a79fae3f884dc1d0803e4

Database specific

Show details

{
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "26.05.4"
        }
    ]
}

Affected versions

0.*

0.7.2

v.*

v.0.7.1

v0.*

v0.10.0

v0.11.0

v0.11.1

v0.11.2

v0.12.0

v0.12.1

v0.12.2

v0.13.0

v0.13.1

v0.14.0

v0.14.1

v0.14.2

v0.14.3

v0.15.0

v0.15.1

v0.15.2

v0.15.3

v0.16.0

v0.16.1

v0.16.2

v0.16.3

v0.17.0

v0.17.1

v0.17.2

v0.17.3

v0.17.4

v0.18.0

v0.18.1

v0.18.2

v0.18.3

v0.18.4

v0.18.5

v0.19.0

v0.20.0

v0.20.1

v0.20.2

v0.20.3

v0.21.0

v0.22.0

v0.23.0

v0.23.1

v0.23.2

v0.24.0

v0.24.1

v0.24.2

v0.24.3

v0.25.0

v0.25.1

v0.25.2

v0.25.3

v0.25.4

v0.25.5

v0.26.0

v0.26.1

v0.26.2

v0.26.3

v0.26.4

v0.27

v0.27.1

v0.27.2

v0.27.3

v0.27.4

v0.27.5

v0.28.0

v0.28.1

v0.28.2

v0.28.3

v0.29.0

v0.29.1

v0.29.2

v0.29.3

v0.30.0

v0.30.1

v0.30.2

v0.30.3

v0.30.4

v0.30.5

v0.30.6

v0.30.7

v0.31.0

v0.31.1

v0.31.2

v0.31.3

v0.31.4

v0.31.5

v0.31.6

v0.31.7

v0.31.8

v0.5.0

v0.6.0

v0.6.1

v0.6.2

v0.6.3

v0.7.0

v0.7.3

v0.7.4

v0.7.5

v0.7.6

v0.8.0

v0.8.1

v0.8.2

v0.9.0

v0.9.1

v0.9.2

v0.9.3

v21.*

v21.04

v21.04.1

v21.04.2

v21.04.3

v21.04.4

v21.04.5

v21.04.6

v21.05

v21.05.1

v21.05.2

v21.05.3

v21.05.4

v21.08

v21.08.1

v21.08.2

v21.08.3

v21.08.4

v21.08.5

v21.08.6

v21.10

v21.10.1

v21.10.2

v21.10.3

v21.11

v21.11.1

v21.11.2

v21.11.3

v21.12

v21.12.1

v21.12.2

v21.12.3

v21.12.4

v21.12.5

v22.*

v22.02

v22.02.1

v22.02.2

v22.02.3

v22.03

v22.03.1

v22.04

v22.04.1

v22.04.2

v22.06

v22.06.1

v22.06.2

v22.07

v22.07.1

v22.07.2

v22.07.3

v22.09

v22.09.1

v22.10

v22.10.1

v22.10.2

v22.11

v22.11.1

v23.*

v23.01

v23.01.1

v23.02

v23.02.1

v23.02.2

v23.02.3

v23.05

v23.05.1

v23.05.2

v23.06

v23.06.1

v23.06.2

v23.08

v23.08.1

v23.08.2

v23.08.3

v23.10

v23.10.1

v23.10.2

v23.10.3

v23.10.4

v23.12

v23.12.1

v23.12.2

v23.12.3

v24.*

v24.02

v24.02.1

v24.02.2

v24.02.3

v24.05

v24.05.1

v24.05.2

v24.05.3

v24.05.4

v24.10

v24.10.1

v24.10.2

v24.10.3

v24.11.4

v24.12

v24.12.1

v25.*

v25.02

v25.02.1

v25.02.2

v25.02.3

v25.02.4

v25.02.5

v25.05

v25.05.1

v25.05.2

v25.07

v25.07.1

v25.07.2

v25.07.3

v25.11

v25.11.1

v25.11.2

v25.11.3

v25.11.4

v25.11.5

v25.11.6

v25.12

v25.12.1

v25.12.2

v25.12.3

v25.12.4

v25.12.5

v25.12.6

v25.12.7

v25.12.8

v25.12.9

v26.*

v26.03

v26.03.1

v26.03.2

v26.03.3

v26.03.4

v26.03.5

v26.05

v26.05.1

v26.05.2

v26.05.3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67204.json"