CVE-2023-33312Network attack vector

Browser script execution via undisclosed reflection

Published Jul 18, 2023 · Updated Apr 28, 2026

Reflected XSS in wppal Easy Captcha 1.0 and earlier allows remote attackers to run script in a visitor's browser via a crafted request. The CNA and sole referenced advisory do not disclose which request value is reflected or where output encoding is omitted. Exploitation requires a visitor to open the crafted request, and successful script executes in that visitor's browser under the site's origin.

CVSS severity7.1
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in wppal Easy Captcha 1.0 and earlier allows remote attackers to run script in a visitor's browser via a crafted request. The CNA and sole referenced advisory do not disclose which request value is reflected or where output encoding is omitted. Exploitation requires a visitor to open the crafted request, and successful script executes in that visitor's browser under the site's origin.

The record

CVE
CVE-2023-33312
Published
Jul 18, 2023
Updated
Apr 28, 2026
Vendor
wppal
Product
Easy Captcha
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

wppal · Easy Captchaversion=n/a <=1.0

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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