# CVE-2026-118990: CallBackery configuration database world-readable in /tmp

Source: https://junglewise.ai/threats/cve-2026-118990-callbackery-versions-before-0-62-0-for-perl-leave-a-world  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-30. Updated: 2026-10-30  
License: CC BY 4.0 with a link back

CVE-2026-118990 · Severity: info · Published 2026-10-30

CallBackery is a web application framework written in Perl that manages configuration and user data. When users take a configuration backup, the tool leaves a world-readable copy of the entire configuration database in the /tmp directory, containing all user password hashes and form data. Any local user on the system can read these files, and an attacker can use symlinks to redirect the dump to a location of their choosing.

Technologies: [OETIKER CallBackery](https://junglewise.ai/threats/technologies/callbackery). Vendors: [OETIKER](https://junglewise.ai/threats/vendors/oetiker).

## Quick answers

**Is CVE-2026-118990 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-118990 being exploited in the wild.

**How severe is CVE-2026-118990?** Informational severity, published 30 October 2026.

**Which products and versions are affected?** OETIKER CallBackery before 0.62.0.

**Is there a fix for CVE-2026-118990?** Yes: fixed in 0.62.0. Until then: Delete any leftover /tmp/cbdump* files from the system, and upgrade to version 0.62.0 or later where backups no longer write database dumps to /tmp. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-118990 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-118990?** Check whether you run OETIKER CallBackery at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 0.62.0

Delete any leftover /tmp/cbdump* files from the system, and upgrade to version 0.62.0 or later where backups no longer write database dumps to /tmp.

## Technical details

The getConfigBlob() function writes an SQLite3 database dump to a predictable filename (/tmp/cbdump<pid>) without restricting file permissions, and the file is never deleted after backup completion. The vulnerability involves a symlink-following race condition with a predictable filename; a local attacker with knowledge of process IDs can create a symlink at the target location to redirect sensitive data. This affects all versions before 0.62.0 and requires local filesystem access.

## Affected products

- OETIKER CallBackery before 0.62.0

## Timeline

- 2026-10-30: disclosed
- 2026-10-29: patched: Fix released in version 0.62.0

## References

- [https://cpan.org/modules](https://cpan.org/modules)
- [https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes](https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes)

## Related threats

- [CallBackery session cookie age validation bypass in X-Session-Cookie header](https://junglewise.ai/threats/cve-2026-118987-callbackery-versions-before-0-62-0-for-perl-accept-session)
- [CallBackery Perl session cookie forgery via weak random secret](https://junglewise.ai/threats/cve-2026-118986-callbackery-versions-before-0-62-0-for-perl-allow-session-cookie)
- [CallBackery unsalted HMAC-SHA1 password hashing](https://junglewise.ai/threats/cve-2026-13576-callbackery-versions-before-0-62-0-for-perl-store-user-passwords)
- [CallBackery regex pattern validation bypass in form fields](https://junglewise.ai/threats/cve-2026-118995-callbackery-versions-before-0-62-0-for-perl-accept-unintended)
- [CallBackery log injection via newlines in login name](https://junglewise.ai/threats/cve-2026-118994-callbackery-versions-before-0-62-0-for-perl-allow-log-injection)