# instack-undercloud vulnerable to symlink attack on tmp files

Advisory record · `GHSA-53wm-97p6-582f`

- **Identifiers:** `GHSA-53wm-97p6-582f` · `CVE-2017-7549` · `PYSEC-2017-152` · `PYSEC-2026-645`
- **State:** Confirmed
- **Severity:** CVSS 6.4 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-59](https://cwe.mitre.org/data/definitions/59.html) · [CWE-377](https://cwe.mitre.org/data/definitions/377.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md) · [CWE-377](https://agentprime.io/advisories/tag/cwe-377.md)
- **Published:** 13 May 2022
- **Updated:** 6 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 13 May 2022, 01:07 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `instack-undercloud` (PyPI): affected `<=7.2.0`; no fixed version yet

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.4 Medium, CVSS 3.0: `CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0035, the 28th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 13 May 2022. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-53wm-97p6-582f](https://github.com/advisories/GHSA-53wm-97p6-582f)
- [OSV: GHSA-53wm-97p6-582f](https://osv.dev/vulnerability/GHSA-53wm-97p6-582f)
- <https://nvd.nist.gov/vuln/detail/CVE-2017-7549>
- <https://access.redhat.com/errata/RHSA-2017:2557>
- <https://access.redhat.com/errata/RHSA-2017:2649>
- <https://access.redhat.com/errata/RHSA-2017:2687>
- <https://access.redhat.com/errata/RHSA-2017:2693>
- <https://access.redhat.com/errata/RHSA-2017:2726>
- <https://access.redhat.com/security/cve/CVE-2017-7549>
- <https://bugzilla.redhat.com/show_bug.cgi?id=1477403>
- <https://github.com/pypa/advisory-database/tree/main/vulns/instack/PYSEC-2017-152.yaml>
- <https://opendev.org/openstack/instack-undercloud>
- <https://web.archive.org/web/20170907040549/http://www.securityfocus.com/bid/100407>
- <http://www.securityfocus.com/bid/100407>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-53wm-97p6-582f>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-53wm-97p6-582f/>. Everything for agents: <https://agentprime.io/llms.txt>.