Dancer2::Plugin::Auth::Extensible versions through 0.713 for Perl allow password reset link poisoning via the request Host header in _default_email_password_reset and _default_welcome_send
Summary
| CVE | CVE-2026-15689 |
|---|---|
| State | PUBLISHED |
| Assigner | CPANSec |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 14:17:06 UTC |
| Updated | 2026-08-26 16:51:19 UTC |
| Description | Dancer2::Plugin::Auth::Extensible versions through 0.713 for Perl allow password reset link poisoning via the request Host header in _default_email_password_reset and _default_welcome_send. Both default emails emit a link of the form `$base/login/$code`, whose authority comes from the request Host header, or from X-Forwarded-Host under behind_proxy (obtained from Dancer2's request->base function). A POST to /login carrying submit_reset and a username needs no authentication: it stores a fresh reset code against that account and mails the account holder a link to a host of the sender's choosing. The welcome mail takes the same path when the application calls create_user with email_welcome set. Through 0.711 the handlers read `request->uri_base` and `request->base` directly; Versions 0.712 and later provide an uri_base configuration key that defaults to the untrusted `request->uri_base` when unset. The default configuration with reset_password_handler enabled and the default message text, a recipient who follows the link hands a working reset code to the sender's host, which is enough to take over the account. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.006080000 probability, percentile 0.465100000 (date 2026-08-26)
Problem Types: CWE-640 | CWE-640 CWE-640 Weak Password Recovery Mechanism for Forgotten Password
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | ABEVERLEY | Dancer2PluginAuthExtensible | affected 0.713 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| metacpan.org/release/ABEVERLEY/Dancer2-Plugin-Auth-Extensible-0.713/source... | 9b29abf9-4ab0-4765-b253-1875cd9b441e | metacpan.org | |
| metacpan.org/release/ABEVERLEY/Dancer2-Plugin-Auth-Extensible-0.711/source... | 9b29abf9-4ab0-4765-b253-1875cd9b441e | metacpan.org | |
| www.openwall.com/lists/oss-security/2026/08/15/4 | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| metacpan.org/release/ABEVERLEY/Dancer2-Plugin-Auth-Extensible-0.713/changes | 9b29abf9-4ab0-4765-b253-1875cd9b441e | metacpan.org | |
| metacpan.org/release/ABEVERLEY/Dancer2-Plugin-Auth-Extensible-0.712/source... | 9b29abf9-4ab0-4765-b253-1875cd9b441e | metacpan.org | |
| metacpan.org/release/ABEVERLEY/Dancer2-Plugin-Auth-Extensible-0.711/source... | 9b29abf9-4ab0-4765-b253-1875cd9b441e | metacpan.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Workarounds
CNA: No fixed release is available. In 0.712 and later, set the uri_base configuration key to the application's own base URL; otherwise reject requests whose host is not an expected application hostname, including X-Forwarded-Host under behind_proxy.
There are currently no legacy QID mappings associated with this CVE.