---
title: "CVE-2026-55562: Cronicle - Stored XSS"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-55562/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-55562)

## 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](https://cwe.mitre.org/data/definitions/79.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-55562](https://nvd.nist.gov/vuln/detail/CVE-2026-55562)
- [https://github.com/jhuckaby/Cronicle/commit/8b60eb5b041614ab661df50e58e612f5e42a7d30](https://github.com/jhuckaby/Cronicle/commit/8b60eb5b041614ab661df50e58e612f5e42a7d30)
- [https://github.com/jhuckaby/Cronicle/releases/tag/v0.9.119](https://github.com/jhuckaby/Cronicle/releases/tag/v0.9.119)
- [https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-vh39-3pcm-2j63](https://github.com/jhuckaby/Cronicle/security/advisories/GHSA-vh39-3pcm-2j63)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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