# CLSA Directory Traversal vulnerability

Advisory record · `GHSA-9xhh-3m78-gvgj`

- **Identifiers:** `GHSA-9xhh-3m78-gvgj` · `CVE-2024-28698`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-22](https://cwe.mitre.org/data/definitions/22.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md)
- **Published:** 22 Jul 2024
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 22 Jul 2024, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `Csla` (NuGet): affected `<5.5.4 || >=6.0.0, <8.0.0 || >=7.0.0, <8.0.0`; fixed in `5.5.4`, `8.0.0`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Csla (CSLA .NET) versions before 8.0 are affected by a directory traversal flaw in the MobileFormatter component. A remote attacker can send a crafted script to execute arbitrary code. Upgrade to Csla 5.5.4 or 8.0.0; the source says 6.x and 7.x have fix commits but no numbered fixed release.

Written 9 Nov 2026.

## 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

- 9.8 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.015, the 74th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:21 UTC: First seen by agentprime
- 31 Oct 2026, 15:21 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-9xhh-3m78-gvgj)

## Sources

- [GitHub Advisory Database: GHSA-9xhh-3m78-gvgj](https://github.com/advisories/GHSA-9xhh-3m78-gvgj)
- [OSV: GHSA-9xhh-3m78-gvgj](https://osv.dev/vulnerability/GHSA-9xhh-3m78-gvgj)
- <https://nvd.nist.gov/vuln/detail/CVE-2024-28698>
- <https://github.com/MarimerLLC/csla/pull/3552>
- <https://github.com/MarimerLLC/csla/commit/2c32a5748a0a4bb0159285dfad61d4050e890080>
- <https://github.com/MarimerLLC/csla/commit/445bc609bc117f62cabf49e1462f7a43b0f8f9a2>
- <https://github.com/MarimerLLC/csla/commit/8fbdd8c773bfeb9ba3e52d91b5a664848629b13a>
- <https://github.com/MarimerLLC/csla/commit/f3a5c3474974f60ce3c8ffbd5d91c23a1e397ea4>
- <https://github.com/MarimerLLC/csla>
- <https://github.com/MarimerLLC/csla/releases/tag/v5.5.4>
- <https://www.intruder.io/research/path-traversal-and-code-execution-in-csla-net-cve-2024-28698>

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-9xhh-3m78-gvgj>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-9xhh-3m78-gvgj/>. Everything for agents: <https://agentprime.io/llms.txt>.