MobSF: SSRF port restriction bypass in assetlinks_check

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68927
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-18 18:19:28 UTC
Updated2026-08-18 19:17:01 UTC
DescriptionMobSF is a mobile application security testing tool used. Prior to 4.5.1, get_browsable_activities in mobsf/StaticAnalyzer/views/android/manifest_analysis.py validates only an Android manifest android:host value with valid_host before appending a separately supplied android:port to the URL fetched by _check_url, allowing an authenticated user to upload a crafted APK that makes requests to an attacker-selected nonstandard port at /.well-known/assetlinks.json. With an attacker-controlled hostname and DNS rebinding between validation and the requests.get connection, the request can reach an internal service, although redirects remain disabled and the path is fixed. This issue is fixed in version 4.5.1.

Risk And Classification

Primary CVSS: v3.1 3 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N
3.1CNADECLARED3LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA MobSF Mobile-Security-Framework-MobSF affected < 4.5.1 Not specified

References

ReferenceSourceLinkTags
github.com/MobSF/Mobile-Security-Framework-MobSF/commit/62563ca429a75b3e... [email protected] github.com
github.com/MobSF/Mobile-Security-Framework-MobSF/security/advisories/GHS... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/MobSF/Mobile-Security-Framework-MobSF/pull/2627 [email protected] github.com
github.com/MobSF/Mobile-Security-Framework-MobSF/releases/tag/v4.5.1 [email protected] github.com
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