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.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ABEVERLEY | Dancer2::Plugin::Auth::Extensible | unaffected |
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Vendor Workaround
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.
Tracking
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Sat, 15 Aug 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
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| References |
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Sat, 15 Aug 2026 13:45:00 +0000
| Type | Values Removed | Values Added |
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| 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. | |
| Title | 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 | |
| Weaknesses | CWE-640 | |
| References |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-08-15T19:06:35.186Z
Reserved: 2026-07-14T01:03:59.438Z
Link: CVE-2026-15689
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-15T14:17:06.480
Modified: 2026-08-15T19:16:32.060
Link: CVE-2026-15689
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-15T15:30:09Z
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CWE-640
Weak Password Recovery Mechanism for Forgotten Password