What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.2 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-05 · updated 2026-06-17
• Weakness: CWE-451

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.

Affected products

• DropBox(HelloSign) DropBox Sign: all versions

References

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

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