CVE-2024-52270 (GCVE-0-2024-52270)
Vulnerability from cvelistv5 – Published: 2024-12-05 10:55 – Updated: 2026-09-21 17:45 X_Known Exploited Vulnerability Exclusively Hosted ServiceTitle
PDF Document Spoofing in DropBox Sign(HelloSign)
Summary
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.
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: partial
Coordinator · VULSec (v2.0.3)
Automatable: Yes
Exploitation: Active
Technical Impact: Partial
Value Density: Diffused
VULSec (v2.0)
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-05 14:49 UTC
CWE
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://www.vulsec.org/advisories | vdb-entry |
| https://www.loom.com/share/48f63594e14c49e19840ad… | exploit |
| https://new.space/s/ZuHoujvkjdzfY7Uihah7Yg#SKWLU_… | exploit |
| https://drive.proton.me/urls/Z6DHXNRZQC#jkfO38rjOiOj | exploit |
| https://sign.dropbox.com/ | product |
| https://app.hellosign.com/ | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| DropBox(HelloSign) | DropBox Sign |
Affected:
0 , ≤ 2024-12-04
(git)
|
guessed |
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 27fccf97-3da8-4838-bee7-2af2c68d94dc
Exploited: Yes
Timestamps
First Seen: 2026-09-21
Asserted: 2026-09-21
Scope
Notes: PDF Document Spoofing in DropBox Sign(HelloSign) | Affected: DropBox(HelloSign) / DropBox Sign | CVSS: 8.2 (HIGH) | EPSS: 0.00193 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | PDF Document Spoofing in DropBox Sign(HelloSign) |
| Cve Id | CVE-2024-52270 |
| Vendor | DropBox(HelloSign) |
| Ghsa Id | None |
| Product | DropBox Sign |
| Added Date | 2026-09-21T18:01:14.657Z |
| Cvss Score | 8.2 |
| Epss Score | 0.00193 |
| Previous Ids | |
| Cvss Severity | HIGH |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.09239 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2024-52270 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | True |
References
Created: 2026-09-22 19:00 UTC
| Updated: 2026-09-22 19:00 UTC
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"vendor": "DropBox(HelloSign)",
"versions": [
{
"lessThanOrEqual": "2024-12-04",
"status": "affected",
"version": "0",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Erez Kalman"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "User Interface (UI) Misrepresentation of Critical Information vulnerability in DropBox Sign(HelloSign) allows Content Spoofing.\u003cbr\u003eDisplayed version does not show the layer flattened version, once download, If printed (e.g. via Google Chrome -\u0026gt; Examine the print preview): Will render the vulnerability only, not all layers are flattened.\u003cbr\u003e\u003cp\u003eThis issue affects DropBox Sign(HelloSign): through 2024-12-04.\u003c/p\u003e"
}
],
"value": "User Interface (UI) Misrepresentation of Critical Information vulnerability in DropBox Sign(HelloSign) allows Content Spoofing.\nDisplayed version does not show the layer flattened version, once download, If printed (e.g. via Google Chrome -\u003e Examine the print preview): Will render the vulnerability only, not all layers are flattened.\nThis issue affects DropBox Sign(HelloSign): through 2024-12-04."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Known, potentially in use (e.g., spear phishing)"
}
],
"value": "Known, potentially in use (e.g., spear phishing)"
}
],
"impacts": [
{
"capecId": "CAPEC-148",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-148 Content Spoofing"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "LOCAL",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "RED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "HIGH",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"other": {
"content": {
"id": "CVE-2024-52270",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "Coordinator",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"Automatable": "Yes",
"Exploitation": "Active",
"Technical Impact": "Partial",
"Value Density": "Diffused",
"version": "2.0"
},
"type": "SSVCv2.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-451",
"description": "CWE-451 User Interface (UI) Misrepresentation of Critical Information",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-12-05T16:52:35.673Z",
"orgId": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe",
"shortName": "VULSec"
},
"references": [
{
"tags": [
"vdb-entry"
],
"url": "https://www.vulsec.org/advisories"
},
{
"tags": [
"exploit"
],
"url": "https://www.loom.com/share/48f63594e14c49e19840ad9cb7d60453?sid=816c6afa-0b67-4b0b-98ff-d5c58d464038"
},
{
"tags": [
"exploit"
],
"url": "https://new.space/s/ZuHoujvkjdzfY7Uihah7Yg#SKWLU_g2Cihfj4qsq9XNy6F4saxVAzD876PujiDOYfs"
},
{
"tags": [
"exploit"
],
"url": "https://drive.proton.me/urls/Z6DHXNRZQC#jkfO38rjOiOj"
},
{
"tags": [
"product"
],
"url": "https://sign.dropbox.com/"
},
{
"tags": [
"product"
],
"url": "https://app.hellosign.com/"
}
],
"source": {
"discovery": "USER"
},
"tags": [
"x_known-exploited-vulnerability",
"exclusively-hosted-service"
],
"title": "PDF Document Spoofing in DropBox Sign(HelloSign)",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "* If other party initiated e-signing - Download the PDF file for a security professionals/educated persons inspection\u003cbr\u003e* If possible - Download the PDF file and perform full flattening (of the entire document, not just form fields)"
}
],
"value": "* If other party initiated e-signing - Download the PDF file for a security professionals/educated persons inspection\n* If possible - Download the PDF file and perform full flattening (of the entire document, not just form fields)"
}
],
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe",
"assignerShortName": "VULSec",
"cveId": "CVE-2024-52270",
"datePublished": "2024-12-05T10:55:30.071Z",
"dateReserved": "2024-11-06T08:35:09.852Z",
"dateUpdated": "2026-09-21T17:45:33.592Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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