01 Record

CVE-2026-12746

Dancer2::Plugin::Auth::OAuth::Provider versions before 0.23 for Perl do not support the OAuth 2.0 state parameter

HighPUBLISHEDCNA: CPANSec

CNA base score8.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

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02 Description

Dancer2::Plugin::Auth::OAuth::Provider versions before 0.23 for Perl do not support the OAuth 2.0 state parameter

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 16.7% of scored records. A rank, not a probability.

NVD base score

8.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-10-25.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-07-04 17:52Z3 MO AGO

Last updated

2026-07-06 14:56Z3 MO AGO

Reserved

2026-06-19

Assigning CNA

CPANSec

Record state

PUBLISHED

Severity

High (CVSS 8.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Weaknesses

CWE-352Cross-Site Request Forgery (CSRF)Compound

Data version

5.2

Document digest

3b5cf8d89ce253a0de8d1e55afb33125cf2ceb048678c953087d2880b9a56cb4

05 Affected products

VendorProductVersionsPlatforms

BIAFRADancer2::Plugin::Auth::OAuth::Provider0 to < 0.23—

06 References

metacpan.orghttps://metacpan.org/release/BIAFRA/Dancer2-Plugin-Auth-OAuth-0.23/diff/BIAFRA/Dancer2-Plugin-Auth-OAuth-0.22
github.comhttps://github.com/biafra/perl-Dancer2-Plugin-Auth-OAuth/commit/806420fc2abbe13bede4461475f2f3dcd7daf5f2.patchpatch
datatracker.ietf.orghttps://datatracker.ietf.org/doc/html/rfc6749#section-10.12technical-description
www.openwall.comhttp://www.openwall.com/lists/oss-security/2026/07/04/9

07 Remediation

Upgrade to version 0.23 or later.