CVE-2020-25032
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.0.9-1 |
| sid | Fixed | 3.0.9-1 |
| forky | Fixed | 3.0.9-1 |
| bullseye | Fixed | 3.0.9-1 |
| bookworm | Fixed | 3.0.9-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | flask-cors | <3.0.9 | 3.0.9 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-25032
- https://github.com/corydolphin/flask-cors/commit/67c4b2cc98ae87cf1fa7df4f97fd81b40c79b895
- https://github.com/advisories/GHSA-xc3p-ff3m-f46v
- https://github.com/corydolphin/flask-cors
- https://github.com/corydolphin/flask-cors/releases/tag/3.0.9
- https://github.com/pypa/advisory-database/tree/main/vulns/flask-cors/PYSEC-2020-43.yaml
- https://www.debian.org/security/2020/dsa-4775
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00032.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00048.html
- https://www.suse.com/security/cve/CVE-2020-25032.html
- https://security-tracker.debian.org/tracker/CVE-2020-25032
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.