---
title: "CVE-2024-28698: CLSA Directory Traversal vulnerability"
url: https://erroneo.us/security/cve/CVE-2024-28698/
description: "CVE-2024-28698 (Csla (NuGet)): Directory Traversal vulnerability in Marimer LLC CSLA .Net before 8.0 allows a remote attacker to execute arbitrary code via…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-07-22
date_modified: 2024-08-15
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-28698"
kev: false
cvss: 9.3
epss: 0.01493
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-28698: CLSA Directory Traversal vulnerability

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.5% , percentile 74: FIRST’s model estimates a 1.5% chance of exploitation activity in the next 30 days, higher than 74% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes Csla (NuGet) < 5.5.4, fixed in 5.5.4 ; Csla (NuGet) >= 6.0.0, <= 6.2.2, fixed in 8.0.0 ; Csla (NuGet) >= 7.0.0, <= 7.0.5, fixed in 8.0.0 . Check your lockfile, including transitive dependencies.

## What it is

Directory Traversal vulnerability in Marimer LLC CSLA .Net before 8.0 allows a remote attacker to execute arbitrary code via a crafted script to the MobileFormatter component.

## Affected packages

- NuGet `Csla` < 5.5.4 → fixed: 5.5.4
- NuGet `Csla` >= 6.0.0, <= 6.2.2 → fixed: 8.0.0
- NuGet `Csla` >= 7.0.0, <= 7.0.5 → fixed: 8.0.0

## Affected products (CVE record)

- n/a n/a: see advisory

## Severity

- CISA-ADP CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.49% probability of exploitation activity in the next 30 days; percentile 74.

## Sources

- [GitHub Advisory GHSA-9xhh-3m78-gvgj](https://github.com/advisories/GHSA-9xhh-3m78-gvgj)
- [CVE.org record CVE-2024-28698](https://www.cve.org/CVERecord?id=CVE-2024-28698)
- [NVD entry CVE-2024-28698](https://nvd.nist.gov/vuln/detail/CVE-2024-28698)
- [github.com](https://github.com/MarimerLLC/csla/pull/3552)
- [intruder.io](https://www.intruder.io/research/path-traversal-and-code-execution-in-csla-net-cve-2024-28698)
- [github.com](https://github.com/MarimerLLC/csla/commit/2c32a5748a0a4bb0159285dfad61d4050e890080)
- [github.com](https://github.com/MarimerLLC/csla/commit/445bc609bc117f62cabf49e1462f7a43b0f8f9a2)
- [github.com](https://github.com/MarimerLLC/csla/commit/8fbdd8c773bfeb9ba3e52d91b5a664848629b13a)
- [github.com](https://github.com/MarimerLLC/csla/commit/f3a5c3474974f60ce3c8ffbd5d91c23a1e397ea4)
- [github.com](https://github.com/MarimerLLC/csla/releases/tag/v5.5.4)

---
Source page: https://erroneo.us/security/cve/CVE-2024-28698/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt