Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2021-24170

User Profile Picture < 2.5.0 - Sensitive Information Disclosure

User Profile Picture · affected before 2.5.0

Watch CVE-2021-24170 Browse KEV feed
Severity
CVSS 7.5 · High
Confidence
High
Exploit status
Exploited in the wild
EPSS
4.8%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2021-24170 is an unauthenticated User Profile Picture < 2.5.0 - Sensitive Information Disclosure. The REST API endpoint get_users in the User Profile Picture WordPress plugin before 2.5.0 returned more information...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is high. Also confirmed by third-party sources.

Who is affected?

User Profile Picture affected before 2.5.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

User Profile Picture < 2.5.0 - Sensitive Information Disclosure

The REST API endpoint get_users in the User Profile Picture WordPress plugin before 2.5.0 returned more information than was required for its functionality to users with the upload_files capability.

This included password hashes, hashed user activation keys, usernames, emails, and other less sensitive information.

Unknown Affected
User Profile Picture
Before 2.5.0
Published
05 Apr 2021
Exploitation Reported
03 Mar 2021
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner wordpress

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

Wordfence

Recorded 03 Mar 2021

A trusted third party reported exploitation.

Proof of concept available

Nuclei Templates

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
Wordfence First 2021-03-03 06:33 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24170.yaml 01 Jun 2026

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.5 High

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

4.8%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Exposure of Sensitive Information to an Unauthorized Actor CWE-200

All CVSS Scores

CVSS v3.1 7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 5.0 Medium

AV:N/AC:L/Au:N/C:P/I:N/A:N

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

User Profile Picture < 2.5.0 - Sensitive Information Disclosure

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 14:20 UTC

    Public PoC available

    Public proof-of-concept code published

  2. 15:34 UTC

    Nuclei template available

    Scanner coverage available

  3. 18:27 UTC

    CVE published

    Vulnerability disclosed publicly

  4. 06:33 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  5. 00:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2021-24170

Sample API response 
{
  "cve_id": "CVE-2021-24170",
  "confidence": "High",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.04788,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}