CVE-2026-53656 json
FiftyOne App server uses wildcard CORS (Access-Control-Allow-Origin: *), enabling cross-origin reads of local server data
published 2026-07-15 3 mo ago modified 2026-10-12 27 d ago also GHSA-q78p-hj9h-5466 , PYSEC-2026-3465 , EUVD-2026-64145
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 1%
- public exploits
- 0
- none known
Summary
FiftyOne is an open-source platform for refining high-quality datasets and visual AI models. Prior to 1.17.0, the FiftyOne App/API server in fiftyone/server/app.py and the /media route in fiftyone/server/routes/media.py unconditionally return Access-Control-Allow-Origin: *. Because the embedded server is local and unauthenticated, a malicious website visited by the user can read cross-origin responses. The /media endpoint accepts a filesystem path, allowing a drive-by page to read files accessible to the server process and exfiltrate them without additional clicks. The allowed_origins configuration and FIFTYONE_ALLOWED_ORIGINS environment variable now make cross-origin access explicit, while the default policy is same-origin. This issue is fixed in version 1.17.0.
Patch / fix
- pypi fiftyone 1.17.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| GitHub | 3.1 | 6.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
| OSV | 3.1 | 6.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | fiftyone | <1.17.0 |
1.17.0 |
Affected products
- voxel51 fiftyone
Classification
References
- github.com /voxel51/fiftyone/commit/6c4fa1b27bf53e4ba567742ffd20d033af7b9e64
-
github.com
/voxel51/fiftyone/commit/7c5b92eec5c7c0210c0c8134351ced77d2800ae0
web
-
github.com
/voxel51/fiftyone/security/advisories/GHSA-q78p-hj9h-5466
web
-
github.com
/voxel51/fiftyone/releases/tag/v1.17.0
web
-
github.com
/voxel51/fiftyone
package
-
pypi.org
/project/fiftyone
package
-
github.com
/advisories/GHSA-q78p-hj9h-5466
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-53656
advisory
Sources
- CVE List CVE-2026-53656
- GitHub Advisory GHSA-q78p-hj9h-5466
- NVD CVE-2026-53656
- OSV PYSEC-2026-3465
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.