CVE-2018-13060Network attack vector

Unauthenticated CAPTCHA bypass via guessable challenges

Published Mar 16, 2020 · Updated Aug 5, 2024

Guessable CAPTCHA protection in Easy!Appointments 1.3.0 allows remote attackers to bypass its anti-automation control via network requests. The available technical reference identifies a CAPTCHA bypass but does not disclose the generator, entropy source, validation routine, or protected action. No authentication or user interaction is required, while the publicly documented consequence is limited to defeating the CAPTCHA gate.

CVSS severity6.5
Medium
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Guessable CAPTCHA protection in Easy!Appointments 1.3.0 allows remote attackers to bypass its anti-automation control via network requests. The available technical reference identifies a CAPTCHA bypass but does not disclose the generator, entropy source, validation routine, or protected action. No authentication or user interaction is required, while the publicly documented consequence is limited to defeating the CAPTCHA gate.

The record

CVE
CVE-2018-13060
Published
Mar 16, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
5.0NIST NVDAV:N/AC:L/Au:N/C:P/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-287Improper Authentication

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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