CPANSA-WebDyne-2026-78190: WebDyne vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-10-31T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-10-31T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | Severity | ||
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
WebDyne versions from 2.014 before 3.022 for Perl reflect request parameters unescaped into form field values, allowing cross-site scripting.
The textfield, password_field and filefield tags fill their value attribute from the request parameter of the same name. WEBDYNE_CGI_AUTOESCAPE, which controls escaping of these values, defaults to off. From 2.022, WebDyne::HTML::Tiny also replaced its entity_encode method with one that returns its input unchanged, so enabling WEBDYNE_CGI_AUTOESCAPE has no effect.
A remote attacker can inject script into any page using these tags through a crafted link.
Vulnerabilities
CVE-2026-78190
Vulnerability DescriptionWebDyne versions from 2.014 before 3.022 for Perl reflect request parameters unescaped into form field values, allowing cross-site scripting.
The textfield, password_field and filefield tags fill their value attribute from the request parameter of the same name. WEBDYNE_CGI_AUTOESCAPE, which controls escaping of these values, defaults to off. From 2.022, WebDyne::HTML::Tiny also replaced its entity_encode method with one that returns its input unchanged, so enabling WEBDYNE_CGI_AUTOESCAPE has no effect.
A remote attacker can inject script into any page using these tags through a crafted link.
| Weakness | CWE-79 : Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') |
|---|
Product status
Known affected
| Product | Score | ||||
|---|---|---|---|---|---|
| WebDyne greater than or equal 2.014 and less than 3.022 |
|
Fixed
- WebDyne greater than or equal 3.022
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-WebDyne-2026-78190 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-webdyne-2026-78190.json - https://metacpan.org/release/ASPEER/WebDyne-3.022/changes external
https://metacpan.org/release/ASPEER/WebDyne-3.022/changes - CVE-2026-78190 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-78190
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Sat Oct 31 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/