CVE-2026-127203
- Source
- https://cve.org/CVERecord?id=CVE-2026-127203
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-127203.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-127203
- Published
- 2026-11-12T16:42:40Z
- Modified
- 2026-11-13T02:47:25Z
- Severity
-
- 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
- Summary
- AppFlowy Cloud 0.9.64 Stored XSS via Blob Upload Content-Type
- Details
-
AppFlowy Cloud through 0.9.64 contains a stored cross-site scripting vulnerability that allows authenticated workspace members to upload blobs with unvalidated Content-Type values that are later served inline without a Content-Disposition header or authentication on the retrieval route. Attackers can upload a text/html or image/svg+xml blob via put_blob_handler, which is then rendered as an active same-origin document through the unauthenticated get_blob_handler endpoint and cached immutably for one year, enabling persistent script execution against any visitor who accesses the URL.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-79" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/127xxx/CVE-2026-127203.json" }- References
-
- https://gist.github.com/mtholmquist/9b9683104fc3b5d78a488c06a6674e5c
- https://github.com/AppFlowy-IO/AppFlowy-Cloud
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/127xxx/CVE-2026-127203.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-127203
- https://www.vulncheck.com/advisories/appflowy-cloud-stored-xss-via-blob-upload-content-type
Affected packages
Git / github.com/appflowy-io/appflowy-cloud
Affected ranges
- Type
- GIT
- Repo
- https://github.com/appflowy-io/appflowy-cloud
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedLast Affected
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "last_affected": "0.9.64" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" } ] }
Affected versions
0.*
0.0.13
0.0.2
0.0.3
0.0.4
0.0.5
0.1.0
0.1.1
0.1.10
0.1.11
0.1.12
0.1.13
0.1.14
0.1.15
0.1.16
0.1.17
0.1.18
0.1.19
0.1.2
0.1.20
0.1.21
0.1.22
0.1.23
0.1.24
0.1.25
0.1.28
0.1.29
0.1.3
0.1.30
0.1.31
0.1.32
0.1.33
0.1.34
0.1.35
0.1.36
0.1.37
0.1.38
0.1.39
0.1.4
0.1.40
0.1.41
0.1.42
0.1.43
0.1.44
0.1.45
0.1.46
0.1.47
0.1.48
0.1.49
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.2.0
0.2.1
0.2.10
0.2.11
0.2.12
0.2.13
0.2.14
0.2.15
0.2.16
0.2.17
0.2.18
0.2.19
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.3.0
0.3.10
0.3.11
0.3.12
0.3.13
0.3.14
0.3.15
0.3.16
0.3.18
0.3.19
0.3.2
0.3.20
0.3.21
0.3.22
0.3.23
0.3.24
0.3.25
0.3.27
0.3.28
0.3.29
0.3.3
0.3.30
0.3.31
0.3.32
0.3.33
0.3.34
0.3.35
0.3.36
0.3.37
0.3.38
0.3.39
0.3.4
0.3.41
0.3.7
0.3.8
0.3.9
0.4.0
0.4.1
0.4.10
0.4.11
0.4.12
0.4.13
0.4.14
0.4.15
0.4.16
0.4.17
0.4.2
0.4.3
0.4.4
0.4.5
0.4.7
0.4.8
0.4.9
0.5.0
0.5.1
0.5.10
0.5.11
0.5.12
0.5.13
0.5.14
0.5.15
0.5.16
0.5.17
0.5.18
0.5.19
0.5.2
0.5.20
0.5.21
0.5.22
0.5.23
0.5.24
0.5.25
0.5.26
0.5.27
0.5.28
0.5.29
0.5.3
0.5.30
0.5.31
0.5.32
0.5.33
0.5.4
0.5.42
0.5.44
0.5.45
0.5.46
0.5.47
0.5.48
0.5.49
0.5.5
0.5.51
0.5.52
0.5.54
0.5.55
0.5.56
0.5.57
0.5.58
0.5.59
0.5.6
0.5.60
0.5.61
0.5.62
0.5.63
0.5.64
0.5.65
0.5.66
0.5.67
0.5.68
0.5.7
0.5.8
0.5.9
0.6.0
0.6.1
0.6.10
0.6.11
0.6.12
0.6.13
0.6.14
0.6.15
0.6.16
0.6.17
0.6.18
0.6.19
0.6.2
0.6.20
0.6.21
0.6.22
0.6.23
0.6.24
0.6.25
0.6.26
0.6.27
0.6.28
0.6.29
0.6.3
0.6.30
0.6.31
0.6.32
0.6.33
0.6.34
0.6.35
0.6.36
0.6.37
0.6.38
0.6.39
0.6.4
0.6.40
0.6.41
0.6.43
0.6.44
0.6.45
0.6.46
0.6.47
0.6.48
0.6.49
0.6.5
0.6.50
0.6.51
0.6.52
0.6.53
0.6.54
0.6.55
0.6.6
0.6.66
0.6.67
0.6.68
0.6.69
0.6.7
0.6.8
0.6.9
0.7.1
0.7.1-test-extra
0.7.10
0.7.11
0.7.12
0.7.13
0.7.14
0.7.15
0.7.17
0.7.19
0.7.2
0.7.20
0.7.21
0.7.22
0.7.24
0.7.25
0.7.26
0.7.27
0.7.28
0.7.3
0.7.4
0.7.5
0.7.6
0.7.7
0.7.9
0.8.0
0.8.1
0.8.10
0.8.11
0.8.12
0.8.13
0.8.14
0.8.15
0.8.16
0.8.17
0.8.18
0.8.19
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.9.0
0.9.1
0.9.10
0.9.11
0.9.12
0.9.13
0.9.14
0.9.15
0.9.16
0.9.17
0.9.18
0.9.19
0.9.2
0.9.20
0.9.21
0.9.22
0.9.23
0.9.24
0.9.25
0.9.26
0.9.27
0.9.28
0.9.29
0.9.3
0.9.30
0.9.31
0.9.32
0.9.33
0.9.34
0.9.35
0.9.36
0.9.37
0.9.38
0.9.39
0.9.4
0.9.40
0.9.41
0.9.42
0.9.43
0.9.44
0.9.45
0.9.46
0.9.47
0.9.48
0.9.49
0.9.5
0.9.50
0.9.51
0.9.52
0.9.53
0.9.54
0.9.55
0.9.56
0.9.57
0.9.58
0.9.59
0.9.6
0.9.60
0.9.61
0.9.62
0.9.63
0.9.64
0.9.7
0.9.8
0.9.9