Improper Limitation of a Pathname to a Restricted Directory in sanic
Priority HIGH 75CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Sanic is an opensource python web server/framework. Affected versions of sanic allow access to lateral directories when using `app.static` if using encoded `%2F` URLs. Parent directory traversal is not impacted. Users are advised to upgrade. There is no known workaround for this issue.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01199 68th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed sanic (sanic-org): 22.6.1, 21.12.2, 20.12.7sanic (PyPI): 22.6.1, 21.12.2, 20.12.7
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| sanic-org | sanic | 22.0.0 to before 22.6.1; 21.0.0 to before 21.12.2; before 20.12.7 | 22.6.1, 21.12.2, 20.12.7 | Patch available | CNA |
| — | sanic (PyPI) | 22.0.0 to before 22.6.1 | 22.6.1 | Patch available | GHSA-8cw9-5hmv-77w6 |
| — | sanic (PyPI) | 21.0.0 to before 21.12.2 | 21.12.2 | Patch available | GHSA-8cw9-5hmv-77w6 |
| — | sanic (PyPI) | before 20.12.7 | 20.12.7 | Patch available | GHSA-8cw9-5hmv-77w6 |
- sanic Vendorsanic-org Affected 22.0.0 to before 22.6.1; 21.0.0 to before 21.12.2; before 20.12.7 Fixed in 22.6.1, 21.12.2, 20.12.7 Patch available CNA
- sanic (PyPI) Vendor— Affected 22.0.0 to before 22.6.1 Fixed in 22.6.1 Patch available GHSA-8cw9-5hmv-77w6
- sanic (PyPI) Vendor— Affected 21.0.0 to before 21.12.2 Fixed in 21.12.2 Patch available GHSA-8cw9-5hmv-77w6
- sanic (PyPI) Vendor— Affected before 20.12.7 Fixed in 20.12.7 Patch available GHSA-8cw9-5hmv-77w6
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sanic_project:sanic:*:*:*:*:*:*:*:* | before 20.12.7; 21.0.0 to before 21.12.2; 22.0.0 to before 22.6.1 | Vulnerable | Sanic Project |
- cpe:2.3:a:sanic_project:sanic:*:*:*:*:*:*:*:* Versions before 20.12.7; 21.0.0 to before 21.12.2; 22.0.0 to before 22.6.1 Vulnerable ·Sanic Project
Remediation
- Fix · CNA sanic (sanic-org) Fixed in 22.6.1, 21.12.2, 20.12.7
- Fix · GHSA-8cw9-5hmv-77w6 sanic (PyPI) Fixed in 22.6.1 Advisory →
- Fix · GHSA-8cw9-5hmv-77w6 sanic (PyPI) Fixed in 21.12.2 Advisory →
- Fix · GHSA-8cw9-5hmv-77w6 sanic (PyPI) Fixed in 20.12.7 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-35920
- 2026-10-03 Alias added: GHSA-8cw9-5hmv-77w6
References
More sanic-org vulnerabilities
- TI-2026-58441 Sanic: HTTP response header injection via missing CR/LF validation in Sanic HTTP/1.1 responses CVSS 3.1HIGH 8.2
- TI-2026-58442 sanic chunked trailer request smuggling allows hidden second request execution CVSS 3.1MEDIUM 6.5
Sources
- CVE-2022-35920 · CVE Program
- CVE-2022-35920 · NVD
- FIRST EPSS
- GHSA-8cw9-5hmv-77w6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences