Vulnerability details

CVE-2026-74759

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

CVSS 3.1

9.8Critical

Official description

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.

CVSS scores

Score	Version	Source	Vector
9.8Critical	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

https://metacpan.org/release/CJCOLLIER/Google-Auth-0.12/source/lib/Google/Auth/ExternalAccountCredentials/Aws.pm technical-description

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Details

Published: 2026-11-01
Last updated: 2026-11-06
State: Published
Assigner (CNA): CPANSec
Kolun priority: 22 · Low

Exploit prediction (EPSS)

0.36%

Probability of exploitation in 30 days

30.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-918
Server-Side Request Forgery (SSRF)