CVE-2024-13820Network attack vector

Unauthenticated data exposure via hardcoded request hash

Published Apr 8, 2025 · Updated Apr 8, 2026

Sensitive information exposure in the Melhor Envio WordPress plugin 2.15.11 and earlier allows remote attackers to read store and plugin data. The run method compares a GET parameter's SHA-512 digest with a hardcoded value, then returns environment, plugin, path, option, vendor, and shipping details. No WordPress login is required; successful requests disclose configuration and limited vendor information without altering data or interrupting service.

CVSS severity5.3
Medium
EPSS probability0.40%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in the Melhor Envio WordPress plugin 2.15.11 and earlier allows remote attackers to read store and plugin data. The run method compares a GET parameter's SHA-512 digest with a hardcoded value, then returns environment, plugin, path, option, vendor, and shipping details. No WordPress login is required; successful requests disclose configuration and limited vendor information without altering data or interrupting service.

The record

CVE
CVE-2024-13820
Published
Apr 8, 2025
Updated
Apr 8, 2026
Vendor
Melhor Envio
Product
Melhor Envio
Classifications
CWE-200, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.15.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Melhor Envio · Melhor Envioversion=0 <=2.15.11

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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