CVE-2026-70658

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Source
https://cve.org/CVERecord?id=CVE-2026-70658
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70658.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-70658
Aliases
Published
2026-09-14T17:14:57Z
Modified
2026-09-16T03:47:20Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
pay-rails/pay: non-constant-time HMAC comparison in Paddle Billing webhook signature verifier
Details

Pay is a payments engine for Ruby on Rails 6.0 and higher. Prior to 11.6.2, Pay::Webhooks::PaddleBillingController#valid_signature? in app/controllers/pay/webhooks/paddle_billing_controller.rb compares the computed 64-character SHA-256 HMAC with the attacker-controlled h1 token from the Paddle-Signature header using Ruby String#==. An unauthenticated remote attacker who can repeatedly submit requests to /pay/webhooks/paddle_billing and obtain sufficiently precise timing measurements can infer matching digest prefixes and recover a valid signature. A forged accepted webhook is enqueued through Pay::Webhooks::ProcessJob and can cause a host application to update billing state, provision paid features, record refunds, or trigger customer notifications. This issue is fixed in version 11.6.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-208"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70658.json"
}
References

Affected packages

Git / github.com/pay-rails/pay

Affected ranges

Type
GIT
Repo
https://github.com/pay-rails/pay
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ba6494109d88209fba2a4df2d9d6373fe81ed805
Fixed
0701305bb142aadc42e259203aa438bc5969a983
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "11.6.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.0.1
0.0.2
v1.*
v1.0.0
v1.0.0.alpha2
v1.0.0.alpha3
v1.0.0.beta3
v1.0.0.beta4
v1.0.0.beta5
v1.0.0.rc1
v1.0.0.rc2
v1.0.0.rc3
v10.*
v10.0.0
v10.0.1
v10.0.2
v10.0.3
v10.1.0
v10.1.1
v10.1.2
v10.1.3
v10.1.4
v10.1.5
v11.*
v11.0.1
v11.1.0
v11.1.1
v11.1.2
v11.1.3
v11.2.0
v11.2.1
v11.2.2
v11.2.3
v11.3.0
v11.3.1
v11.4.0
v11.4.1
v11.4.2
v11.4.3
v11.5.0
v11.6.0
v2.*
v2.0.0
v2.0.1
v2.0.2
v2.0.3
v2.1.0
v2.1.1
v2.1.2
v2.1.3
v2.2.0
v2.2.2
v2.3.0
v2.3.1
v2.4.0
v2.4.2
v2.4.3
v2.4.4
v2.5.0
v2.6.0
v2.6.1
v2.6.10
v2.6.11
v2.6.3
v2.6.8
v2.6.9
v2.7.0
v2.7.1
v2.7.2
v3.*
v3.0.0
v3.0.1
v3.0.10
v3.0.11
v3.0.12
v3.0.13
v3.0.14
v3.0.15
v3.0.16
v3.0.17
v3.0.18
v3.0.19
v3.0.2
v3.0.20
v3.0.21
v3.0.22
v3.0.23
v3.0.24
v3.0.3
v3.0.4
v3.0.5
v3.0.6
v3.0.7
v3.0.8
v3.0.9
v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.4
v4.1.0
v4.1.1
v4.2.0
v4.2.1
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v6.*
v6.0.0
v6.0.1
v6.0.2
v6.0.3
v6.1.0
v6.1.1
v6.1.2
v6.2.0
v6.2.1
v6.2.2
v6.2.3
v6.2.4
v6.3.0
v6.3.1
v6.3.2
v6.3.3
v6.3.4
v6.4.0
v6.5.0
v6.6.0
v6.6.1
v6.7.0
v6.7.1
v6.7.2
v6.8.0
v6.8.1
v7.*
v7.0.0
v7.1.0
v7.1.1
v7.2.1
v7.3.0
v8.*
v8.0.0
v8.1.0
v8.2.0
v8.2.1
v8.2.2
v8.3.0
v9.*
v9.0.0
v9.0.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70658.json"