Critical auth bypass in widely used Google Cloud services enabling cross-tenant takeover; impacts cloud tenant isolation and could disrupt many organizations.
CVE-2026-14934
Auth bypass in Google Cloud repo creation enables cross-tenant takeover.
Is CVE-2026-14934 being exploited?
Not confirmed. CVE-2026-14934 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-14934?
CVE-2026-14934 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-14934?
Yes. A fix has been recorded for CVE-2026-14934. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-14934 affect?
CVE-2026-14934 affects Google Cloud BigQuery (Oct2025–May102026), Dataform (Oct2025–May102026), Colab Enterprise (Oct2025–May102026). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-14934?
Confirm Google Cloud services reflect May 10 patch; audit repo activity and rotate exposed credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can escalate privileges to take over cross-tenant repositories, access/modify data and execute repository actions.
Monitor only
- affected>= 2025-10 and < 2026-05-10
- affected>= 2025-10 and < 2026-05-10
- affected>= 2025-10 and < 2026-05-10
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.