CVE-2026-114627

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CVE-2026-114627

Summary: Web::Simple versions before 0.036 for Perl do not escape values interpolated into double-quoted strings in HTML::Tags output

Details: 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.

References: http://www.openwall.com/lists/oss-security/2026/11/04/5, https://cpan.org/modules, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114627.json, https://metacpan.org/release/ETHER/Web-Simple-0.036/changes, https://nvd.nist.gov/vuln/detail/CVE-2026-114627, https://github.com/p5sagit/Web-Simple/commit/01e575827fdd9ba3a08063fd414b1de465380015.patch, https://github.com/p5sagit/Web-Simple