GHSA-29XF-69GQ-M9JX
Vulnerability from github – Published: 2026-07-06 20:53 – Updated: 2026-07-06 20:53Summary
The PUT /api/v2/users/{user}/password endpoint authorized only ActionUpdatePersonal and did not prevent a user-admin from resetting an owner account's password. It also did not require the current password when an admin reset another user's password.
Note: Exploitation requires the privileged
user-adminrole so practical risk is limited to deployments that grantuser-adminto less trusted operators.
Impact
A user-admin could reset any owner's password without knowing it, authenticate as that owner and gain full deployment control, including templates, workspaces, licensing, organization settings and the ability to self-assign the owner role. This was a privilege escalation from user-admin to owner.
Patches
The fix prevents non-owner users from resetting the password of an account that holds the owner role.
The fix was backported to all supported release lines:
| Release line | Patched version |
|---|---|
| 2.34 | v2.34.2 |
| 2.33 | v2.33.8 |
| 2.32 | v2.32.7 |
| 2.29 (ESR) | v2.29.17 |
Workarounds
Restrict the user-admin role to trusted administrators until upgrading.
Resources
- Fix: #25709
Credits
Coder would like to thank Anthropic's Security Team (ANT-2026-22436) for independently disclosing this issue!
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/coder/coder/v2"
},
"ranges": [
{
"events": [
{
"introduced": "2.34.0"
},
{
"fixed": "2.34.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/coder/coder/v2"
},
"ranges": [
{
"events": [
{
"introduced": "2.33.0"
},
{
"fixed": "2.33.8"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/coder/coder/v2"
},
"ranges": [
{
"events": [
{
"introduced": "2.30.0"
},
{
"fixed": "2.32.7"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/coder/coder/v2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.29.17"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-55077"
],
"database_specific": {
"cwe_ids": [
"CWE-285"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-06T20:53:04Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Summary\n\nThe `PUT /api/v2/users/{user}/password` endpoint authorized only `ActionUpdatePersonal` and did not prevent a `user-admin` from resetting an `owner` account\u0027s password. It also did not require the current password when an admin reset another user\u0027s password.\n\n\u003e **Note:** Exploitation requires the privileged `user-admin` role so practical risk is limited to deployments that grant `user-admin` to less trusted operators.\n\n### Impact\n\nA `user-admin` could reset any owner\u0027s password without knowing it, authenticate as that owner and gain full deployment control, including templates, workspaces, licensing, organization settings and the ability to self-assign the `owner` role. This was a privilege escalation from `user-admin` to `owner`.\n\n### Patches\n\nThe fix prevents non-owner users from resetting the password of an account that holds the `owner` role.\n\nThe fix was backported to all supported release lines:\n\n| Release line | Patched version |\n|---|---|\n| 2.34 | [v2.34.2](https://github.com/coder/coder/releases/tag/v2.34.2) |\n| 2.33 | [v2.33.8](https://github.com/coder/coder/releases/tag/v2.33.8) |\n| 2.32 | [v2.32.7](https://github.com/coder/coder/releases/tag/v2.32.7) |\n| 2.29 (ESR) | [v2.29.17](https://github.com/coder/coder/releases/tag/v2.29.17) |\n\n### Workarounds\n\nRestrict the `user-admin` role to trusted administrators until upgrading.\n\n### Resources\n- Fix: #25709\n\n### Credits\n\nCoder would like to thank Anthropic\u0027s Security Team (ANT-2026-22436) for independently disclosing this issue!",
"id": "GHSA-29xf-69gq-m9jx",
"modified": "2026-07-06T20:53:04Z",
"published": "2026-07-06T20:53:04Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/coder/coder/security/advisories/GHSA-29xf-69gq-m9jx"
},
{
"type": "WEB",
"url": "https://github.com/coder/coder/pull/25709"
},
{
"type": "PACKAGE",
"url": "https://github.com/coder/coder"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Coder: User-admin role can reset owner account password"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.