CVE-2026-55077: Coder improper authorization in password reset endpoint

CVE-2026-55077 · Severity: high · CVSS 7.2 · Published 2026-07-07

Coder, a platform for managing remote development environments, contains a vulnerability that allows users with administrative privileges to reset the passwords of top-level 'owner' accounts. By resetting an owner's password, a less-privileged administrator could take full control of the entire Coder deployment and all associated data. This risk is highest for organizations that grant administrative roles to individuals who should not have full system ownership.

Technologies: Coder, github.com/coder/coder (Go), github.com/coder/coder/v2 (Go). Vendors: Coder, Go.

Quick answers

Is CVE-2026-55077 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-55077 being exploited in the wild.
How severe is CVE-2026-55077?
High severity, with a CVSS score of 7.2, published 7 July 2026.
Which products and versions are affected?
Coder < 2.29.17, >= 2.30.0 < 2.32.7, >= 2.33.0 < 2.33.8, >= 2.34.0 < 2.34.2; github.com/coder/coder (Go) SEMVER:introduced=0; github.com/coder/coder/v2 (Go) SEMVER:introduced=0,fixed=2.29.17,introduced=2.30.0,fixed=2.32.7,introduced=2.33.0,fixed=2.33.8,introduced=2.34.0,fixed=2.34.2, SEMVER:introduced=2.34.0,fixed=2.34.2.
Is there a fix for CVE-2026-55077?
Yes. github.com/coder/coder/v2 (Go): upgrade to 2.34.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-55077 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-55077?
Check whether you run Coder, github.com/coder/coder (Go) or github.com/coder/coder/v2 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/coder/coder/v2 (Go): upgrade to 2.34.2 or later
    go get github.com/coder/coder/v2@v2.34.2

Technical details

An improper authorization vulnerability exists in Coder's `PUT /api/v2/users/{user}/password` endpoint. Prior to the fix, the endpoint only checked for the `ActionUpdatePersonal` permission, which is held by the `user-admin` role, but failed to implement a guard preventing these admins from targeting accounts with the `owner` role. Additionally, the current password check is bypassed during administrative resets. A malicious or compromised `user-admin` account can exploit this to reset an owner's password and authenticate as them, gaining full control over the Coder instance. The issue is resolved in versions 2.29.17, 2.32.7, 2.33.8, and 2.34.2 by enforcing a check that prevents non-owners from resetting owner passwords.

Affected products

  • Coder Coder < 2.29.17, >= 2.30.0 < 2.32.7, >= 2.33.0 < 2.33.8, >= 2.34.0 < 2.34.2

Identifiers

  • CVE-2026-55077
  • GHSA-29xf-69gq-m9jx
  • GO-2026-5906

Timeline

  • 2026-05-27: other: Fix pull request submitted
  • 2026-06-11: patched: Security releases v2.32.7 and v2.33.8 published
  • 2026-06-12: patched: Security release v2.29.17 published
  • 2026-07-07: disclosed: CVE-2026-55077 published

References

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