CVE-2026-118995

CallBackery versions before 0.62.0 for Perl accept unintended values in form fields checked by createRxValidator

Published Oct 30, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Description
CallBackery versions before 0.62.0 for Perl accept unintended values in form fields checked by createRxValidator.

createRxValidator() is documented to anchor the supplied pattern at both ends, but builds /^${rx}$/ without grouping the pattern. An alternation such as yes|no then accepts any value starting with yes or ending with no, and $ also accepts a value with one trailing newline.

An authenticated user can submit values the pattern was meant to reject, which an application may then write into generated configuration files.

Remediation

Vendor Solution

Upgrade to CallBackery 0.62.0 or later.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Type Values Removed Values Added
First Time appeared Perl
Perl callbackery
Vendors & Products Perl
Perl callbackery
Type Values Removed Values Added
Description CallBackery versions before 0.62.0 for Perl accept unintended values in form fields checked by createRxValidator. createRxValidator() is documented to anchor the supplied pattern at both ends, but builds /^${rx}$/ without grouping the pattern. An alternation such as yes|no then accepts any value starting with yes or ending with no, and $ also accepts a value with one trailing newline. An authenticated user can submit values the pattern was meant to reject, which an application may then write into generated configuration files.
Title CallBackery versions before 0.62.0 for Perl accept unintended values in form fields checked by createRxValidator
Weaknesses CWE-625
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
CPANSec
Published
Updated
Nov 6, 2026, 4:52 PM
Reserved
Oct 29, 2026, 10:58 AM
Status
Deferred
Published
Oct 30, 2026, 1:18 PM
Modified
Nov 6, 2026, 5:17 PM