# CVE-2026-74759: CVE-2026-74759

Status: published. Published: 2026-11-01. Updated: 2026-11-01.

Google::Auth versions 0.12 for Perl allow server side request forgery via unvalidated credential_source URLs in AWS external account credentials.

An external_account configuration with the AWS subject token type selects Google::Auth::ExternalAccountCredentials::Aws. Its retrieve_subject_token sends requests to the imdsv2_session_token_url, url and region_url fields of credential_source without the host check that the other credential classes apply.

Any caller that builds credentials from a configuration it does not fully control issues GET and PUT requests to hosts the configuration names, including internal services and link-local metadata endpoints.

## Remediation

No remediation reported in collected sources

## Affected products and versions

Not reported in collected sources.

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-918

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://metacpan.org/release/CJCOLLIER/Google-Auth-0.12/source/lib/Google/Auth/ExternalAccountCredentials/Aws.pm (9b29abf9-4ab0-4765-b253-1875cd9b441e)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-74759; retrieved 2026-11-02; source updated 2026-11-01

Revision: 77bc58ce262602a38147cc45c9783433262c0534cb64a161dc8fe0496b50aa94

Canonical: https://y2.dev/cve/CVE-2026-74759