CVE-2026-55562 Cronicle - Stored XSS

Cronicle < 0.9.119 contains a stored XSS caused by improper encoding of attacker-controlled user full_name in Activity Log, letting authenticated or anonymous attackers execute scripts in administrator sessions, exploit requires admin to view Activity Log.

CVSS base score 9.0 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to version 0.9.119 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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