Critical 9.0
CVE-2026-55562

jhuckaby Cronicle — cross-site scripting.

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI.

Published Updated Source NVD
CVSS 3.1
9.0
AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Exploit chance, 30 days
0.5%
Higher than 40% of all CVEs (EPSS)
Status
No known exploitation
Not in CISA KEV
Patch
Unknown
Check the vendor advisory

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.119, the administrator Activity Log in htdocs/js/pages/admin/Activity.js concatenates the attacker-controlled item.user.full_name value into HTML without applying encode_entities and inserts the result through this.div.html. The bundled pixl-server-user input filter can be bypassed by a tag containing a line break because its regular expression does not match newlines. An authenticated non-administrator can update the attacker's own name through /api/user/update using a valid session and current password; when free_accounts is enabled, an anonymous attacker can instead plant the name during self-registration. The stored name executes script in an administrator's session when the Activity Log is opened, enabling administrator takeover and subsequent command execution through privileged Cronicle features. This issue is fixed in version 0.9.119.

What to do

  1. 01Check whether you run jhuckaby Cronicle, and which version.
  2. 02Follow the vendor advisory for a fix or a workaround.

References

Timeline · UTC

  1. Published to NVD
  2. NVD record updated
Vendor
jhuckaby1 CVE in 30 days
All jhuckaby CVEs