CVE-2022-35920 json
Improper Limitation of a Pathname to a Restricted Directory in sanic
published 2022-08-01 4 y ago modified 2026-07-07 4 mo ago also GHSA-8cw9-5hmv-77w6 , PYSEC-2026-918 , EUVD-2022-6514
- cvss
- 8.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 68%
- public exploits
- 0
- none known
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.
Patch / fix
- pypi sanic 20.12.7, 21.12.2, 22.6.1
- sanic_project sanic 20.12.7, 21.12.2, 22.6.1
- github.com/sanic-org/sanic#2495 pull request
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/sanic-org/sanic/issues/2478 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L |
| GitHub | 3.1 | 8.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | sanic | >=22.0.0, <22.6.1 >=21.0.0, <21.12.2 <20.12.7 |
22.6.1 21.12.2 20.12.7 |
Affected products
- sanic-org sanic
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/sanic-org/sanic/pull/2495
web, patch, third-party-advisory
-
github.com
/sanic-org/sanic/issues/2478
web, exploit, issue-tracking, third-party-advisory
-
github.com
/sanic-org/sanic/security/advisories/GHSA-8cw9-5hmv-77w6
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-35920
advisory
-
github.com
/sanic-org/sanic
package
-
pypi.org
/project/sanic
package
-
github.com
/advisories/GHSA-8cw9-5hmv-77w6
advisory
Sources
- CVE List CVE-2022-35920
- GitHub Advisory GHSA-8cw9-5hmv-77w6
- NVD CVE-2022-35920
- OSV PYSEC-2026-918
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.