Plane: OAuth Avatar Redirect SSRF Leads to Internal Data Exfiltration via Static Asset Endpoint

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-105628
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-05 18:17:35 UTC
Updated2026-10-05 18:17:36 UTC
DescriptionPlane is an open-source project management tool. Prior to 1.4.0, Plane's OAuth avatar synchronization flow fetches avatar_url from provider user data through a server-side HTTP request without internal IP validation and follows redirects by default. An attacker can provide an avatar URL that redirects to an internal-only resource, such as a metadata endpoint, and Plane uploads the fetched response as a user avatar file. The object is then exposed through /api/assets/v2/static/{asset_id}/, allowing exfiltration of internally fetched content. This issue is fixed in 1.4.0.

Risk And Classification

Primary CVSS: v3.1 7.6 HIGH from [email protected]

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

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.6HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
3.1CNADECLARED7.6HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Makeplane Plane affected < 1.4.0 Not specified

References

ReferenceSourceLinkTags
github.com/makeplane/plane/releases/tag/v1.4.0 [email protected] github.com
github.com/makeplane/plane/pull/9163 [email protected] github.com
github.com/makeplane/plane/security/advisories/GHSA-cv9p-325g-wmv5 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615 [email protected] github.com
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