# CVE-2026-100881 — zhistaredu StarTraining

> As of 2026-09-28, CVE-2026-100881 is a LOW-severity vulnerability in zhistaredu StarTraining, CVSS v3.1 2.6. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-100881 as of 2026-09-28; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-28

## What is CVE-2026-100881?

A security vulnerability has been detected in zhistaredu StarTraining up to 3.8.1. This issue affects some unknown processing of the file application.yml. Such manipulation of the argument xss.enabled leads to cross site scripting. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. Not independently exploitable: a defense-in-depth absence that amplifies CVE-2026-100880. The vendor was contacted early about this disclosure but did not respond in any way.

The record classifies CVE-2026-100881 under weakness classes [CWE-79](https://intel.threadlinqs.com/cwe/CWE-79), [CWE-94](https://intel.threadlinqs.com/cwe/CWE-94). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs a user to take an action first. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 8 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 2.6 — LOW (`CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C`)
- **CVSS v4.0 base score:** 2.1 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 1.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-27, last modified 2026-09-28

## Is CVE-2026-100881 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **zhistaredu**: StarTraining

## How to fix CVE-2026-100881

No vendor patch reference has been recorded for CVE-2026-100881 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-100881

No threat campaign in the Threadlinqs corpus currently references CVE-2026-100881, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org. Last verified by Threadlinqs on 2026-09-28.

**Exploit and proof of concept**

- [github.com — exploit](https://github.com/ArrestX/startraining-advisories/blob/main/advisories/ST-VULN-007-xss-filter-disabled.md)

**Technical analysis**

- [vuldb.com — vdb entry](https://vuldb.com/vuln/410811)

**Third-party advisory**

- [vuldb.com — signature](https://vuldb.com/vuln/410811/cti)
- [vuldb.com — third party advisory](https://vuldb.com/cve/CVE-2026-100881)
- [vuldb.com — third party advisory (915513)](https://vuldb.com/submit/915513)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-100881
Full detection coverage and IOCs for threats exploiting CVE-2026-100881 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp