CVE-2026-59766: Code.gitea.io/gitea Revoked User Still Reads Private Vulnerability
MODERATECVE-2026-59766 is a MODERATE (CVSS 4.3) revoked user still reads private vulnerability (CWE-863: Incorrect Authorization) affecting Code.gitea.io/gitea libraries in the Go ecosystem. The issue involves revoked user still reads private repo objects via `/api/v1/user/starred` and private issue titles via `/api/v1/user/times`. Remediation is available by upgrading affected packages to version 1.27.0.
CVE-2026-59766 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
How to Fix CVE-2026-59766
To remediate this vulnerability, upgrade all affected Code.gitea.io/gitea dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade code.gitea.io/gitea to 1.27.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for code.gitea.io/giteaHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-59766, inspect your project dependencies for Code.gitea.io/gitea:
inspect dependencies for code.gitea.io/giteaAnalyze the terminal output to locate any version of Code.gitea.io/gitea in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.27.0), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Code.gitea.io/gitea, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-59766 Affected Code.gitea.io/gitea Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
code.gitea.io/gitea
|
Go |
< 1.27.0
|
1.27.0
|
References
Frequently Asked Questions
What is CVE-2026-59766?
Which Code.gitea.io/gitea versions are affected?
What version fixes CVE-2026-59766?
Is code.gitea.io/gitea affected?
What is the CVSS score of CVE-2026-59766?
What CWE is associated with CVE-2026-59766?
How can I check Go dependencies for CVE-2026-59766?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-qf2f-qh6p-7v89",
"modified" : "2026-07-21T20:13:03Z",
"published" : "2026-07-21T20:13:03Z",
"aliases" : [ "CVE-2026-59766" ],
"summary" : "Gitea CVE-2026-20800 sibling endpoints not covered: revoked user still reads private repo objects via `/api/v1/user/starred` and private issue titles via `/api/v1/user/times`",
"details" : "## Summary\nCVE-2026-20800 fixed private-info leakage to revoked users only for the notification endpoint. Two\nsibling endpoints that return data keyed on the caller's own relationship still do not re-check repo\naccess at output time:\n- `GET /api/v1/user/starred` — `getStarredRepos()` computes a per-repo permission but still lists every\n starred repo (no filtering), so the full repo object (`full_name`, `private`, `clone_url`, `ssh_url`)\n of a now-inaccessible private repo is returned.\n- `GET /api/v1/user/times` — `ListMyTrackedTimes()` queries by `UserID` only and `LoadAttributes` brings\n in the issue (`title`, `state`), leaking private issue titles after revocation.\n\n## Steps to reproduce\nUsing the provided reproduction materials, as a revoked user:\n1. Control: `GET /api/v1/repos/admin/starred-test` → **404**.\n2. `GET /api/v1/user/starred` → leaks `admin/starred-test`, `private:true`, `clone_url`.\n3. `GET /api/v1/user/times` → leaks `issue.title = \"SECRET: …\"`, `state`.\n\n(Runtime-confirmed on `gitea/gitea:1.25.4`. Oracle = planted sentinel title; no real secret exfiltrated.)\n\n## Impact\nA former collaborator can enumerate private repos they starred and read private issue titles they logged\ntime on, indefinitely after access revocation. Metadata only (no repo content / comment bodies). Low.\n\n## Suggested remediation\n1. `getStarredRepos`: drop (or minimally redact) repos where `permission.HasAnyUnitAccessOrPublicAccess()`\n is false for the caller.\n2. `ListMyTrackedTimes`: filter tracked-time entries by current repo access.\n3. Optionally clear a user's stars / time entries for a private repo on revocation.\n\n## Credit\nReported as part of an incomplete-patch measurement study (responsible disclosure).",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "code.gitea.io/gitea"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "1.27.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/go-gitea/gitea/security/advisories/GHSA-qf2f-qh6p-7v89"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/go-gitea/gitea"
}, {
"type" : "WEB",
"url" : "https://github.com/go-gitea/gitea/releases/tag/v1.27.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-863" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-07-21T20:13:03Z",
"nvd_published_at" : null
}
}