Vulnerability · Published Nov 4, 2026 · Assigned by CPANSec
CVE-2026-114627Web::Simple versions before 0.036 for Perl do not escape values interpolated into double-quoted strings in HTML::Tags output
Unrated
In plain English
A cross-site scripting in Web-Simple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Web::Simple versions before 0.036 for Perl do not escape values interpolated into double-quoted strings in HTML::Tags output. Under use HTML::Tags or use XML::Tags, a double-quoted string literal becomes a StringThing object that holds each interpolated value as a separate part. The escaping step passes such objects through, and stringify joins their interpolated parts as is. A value passed on its own, as in <p>, $value, </p>, is entity-escaped, but the same value in "Hello $value" is not. An attacker who controls a value that an application interpolates into a double-quoted string can inject script into the generated page.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libweb-simple-perl | no fix listed | DEBIAN-CVE-2026-114627 |
| Debian:13 | libweb-simple-perl | no fix listed | DEBIAN-CVE-2026-114627 |
| Debian:14 | libweb-simple-perl | 0.036-1 | DEBIAN-CVE-2026-114627 |
| Ubuntu:22.04:LTS | libweb-simple-perl | no fix listed | UBUNTU-CVE-2026-114627 |
| Ubuntu:24.04:LTS | libweb-simple-perl | no fix listed | UBUNTU-CVE-2026-114627 |
| Ubuntu:26.04:LTS | libweb-simple-perl | no fix listed | UBUNTU-CVE-2026-114627 |
| Ubuntu:26.10 | libweb-simple-perl | no fix listed | UBUNTU-CVE-2026-114627 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Web-Simple | 0 – before 0.036 |
Weakness: CWE-79