# CVE-2026-108802: y_project RuoYi Dictionary Data Drawer Preview add renderDrawer cross site scripting

> Remote attackers can execute arbitrary scripts via the cssClass argument in the Dictionary Data Drawer Preview, potentially compromising user sessions.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 12 Oct 2026
- **Updated:** 14 Oct 2026
- **Also known as:** GHSA-pq38-jcrf-2whw

## What is CVE-2026-108802?

CVE-2026-108802 is a medium-severity cross-site scripting vulnerability in y_project RuoYi, published on 12 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A weakness has been identified in y_project RuoYi up to 4.8.3. This affects the function renderDrawer of the file /system/dict/data/add of the component Dictionary Data Drawer Preview. Executing a manipulation of the argument cssClass can lead to cross site scripting. The attack may be performed from remote. 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.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-108802?


## How do I fix CVE-2026-108802?

No fix has been published for CVE-2026-108802 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-108802 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108802 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-108802 and fix it if it is affected.

What it is: CVE-2026-108802 is a medium-severity cross-site scripting vulnerability in y_project RuoYi, published on 12 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108802 exists.

Affected product: y_project RuoYi. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-108802/ (Markdown: https://insights.sbomify.com/CVE-2026-108802/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-108802
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-108802
- OSV: https://osv.dev/vulnerability/CVE-2026-108802

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-108802/
Summaries are generated and may contain mistakes; the official description above is the record.