CVE-2026-70658 Pay - Authentication Bypass

Pay for Ruby on Rails < 11.6.2 contains a timing attack vulnerability caused by insecure comparison of HMAC signatures in PaddleBillingController, letting unauthenticated remote attackers forge accepted webhooks, exploit requires precise timing measurements.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.58% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-208

Vendor fix

Update to version 11.6.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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