CVE-2022-35920

Improper Limitation of a Pathname to a Restricted Directory in sanic

HIGH

7.5

CVSS Score

Published: August 1, 2022 at 09:35 PM UTC

Updated: June 17, 2026 at 04:52 AM UTC

2 products affected across 2 vendorsSanicSanic

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Severity

HIGH7.5

Exploit prediction

EPSS 1%

SSVC

PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Sanic · Sanic Project

95%

v < 20.12.721.0.0 ≤ v < 21.12.222.0.0 ≤ v < 22.6.1

Affected range stops below 20.12.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.12.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.6.1, so it looks safe — our inference, not a vendor statement

Sanic · Sanic Org

60%

v < 20.12.7v < 21.12.2v < 22.6.1

Affected range stops below 20.12.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.12.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.6.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/sanic-org/sanic/pull/2495

References (3)

x_refsource_MISCExploitIssue TrackingThird Party Advisory

Source: [email protected]

https://github.com/sanic-org/sanic/issues/2478

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/sanic-org/sanic/pull/2495

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://github.com/sanic-org/sanic/security/advisories/GHSA-8cw9-5hmv-77w6

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-22

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