CVE-2026-39400
CVE-2026-39400 is a medium-severity vulnerability in Cronicle with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v4: 5.3
- EPSS exploit prediction: 0% (7th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-19923
- Weakness: CWE-79
- Affected product: Cronicle
- Published:
- Last modified:
Description
Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.111, a non-admin user with create_events and run_events privileges can inject arbitrary JavaScript through job output fields (html.content, html.title, table.header, table.rows, table.caption). The server stores this data without sanitization, and the client renders it via innerHTML on the Job Details page. This vulnerability is fixed in 0.9.111.
Frequently asked questions
- What is CVE-2026-39400?
- Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. Prior to 0.9.111, a non-admin user with create_events and run_events privileges can inject arbitrary JavaScript through job output fields (html.content, html.title, table.header, table.rows, table.caption). The server stores this data without sanitization, and the client renders it via innerHTML on the Job Details page. This vulnerability is fixed in 0.9.111.
- How severe is CVE-2026-39400?
- CVE-2026-39400 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2026-39400 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-39400?
- CVE-2026-39400 affects Cronicle. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-39400?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-39400 have an EU (EUVD) identifier?
- Yes. CVE-2026-39400 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19923.
- When was CVE-2026-39400 published?
- CVE-2026-39400 was published on 2026-04-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cronicle:cronicle:*:*:*:*:*:*:*:*
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