RCE in Zhistaredu Startraining
CVE-2026-100880
A weakness has been identified in zhistaredu StarTraining up to 3.8.1. This vulnerability affects unknown code of the file du-common/src/main/java/com/edu/common/utils/file/MimeTypeUtils.java of the component Upload Endpoint. This manipulation of the argument File causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Zhistaredu Startraining — versions 3.8.0, 3.8.1
Weakness classification (CWE)
References
- github.com/ArrestX/startraining-advisories/blob/main/advisories/ST-VULN-006-sto… (exploit)
- vuldb.com/cve/CVE-2026-100880 (third-party-advisory)
- vuldb.com/submit/915512 (third-party-advisory)
- vuldb.com/vuln/410810 (technical-description, vdb-entry)
- vuldb.com/vuln/410810/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-100880?
- CVE-2026-100880 is a low-severity vulnerability in Zhistaredu Startraining, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-09-27.
- How severe is CVE-2026-100880?
- Low severity. CVSS v3 base score is 3.5 out of 10.