Alta Video — 1874: Babel could generate code vulnerable to denial of service

Release Date

14th of August 2025.

Overview

The Babel NPM package could generate code vulnerable to a denial of service attack via regular expression capture group replacements.

Affected Products

• Alta Video:
  • All Stable upgrade channel versions before 7.6.5.
  • All Beta upgrade channel versions before 7.6.0.

Unaffected Products

• Alta Video:

  • All Stable upgrade channel versions after and including 7.6.5.
  • All Beta upgrade channel versions after and including 7.6.0.

• Avigilon Cloud-Native Cameras: all versions.

• Alta Video Cloud: all versions.

Resolution

This issue has been fixed in Alta Video Beta upgrade channel version 7.6.0 and Stable upgrade channel version 7.6.5.

It is strongly recommended that all installations running an affected version are upgraded to the latest release as soon as possible. Releases are available to download through the Alta Video User Interface.

Vulnerability Information

• CVE: CVE-2025-27789
• CVSSv3 score: 6.2 (Medium)
• CVSSv3 vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mitigations

There are no known mitigations for this issue.

Work arounds

There are no known work arounds for this issue.

Acknowledgements

Issue reported by Babel.

Disclosure Timeline

• 11/03/2025 Issue found
• 18/03/2025 Root cause established
• 19/03/2025 Fix identified
• 03/06/2025 Patched Alta Video (Beta upgrade channel) released
• 08/07/2025 Patched Alta Video (Stable upgrade channel) released
• 14/08/2025 Vulnerability publicly disclosed