CVE-2009-10001Public exploitNetwork attack vector

Browser script execution via unescaped captcha reflection

Published Jan 13, 2023 · Updated Aug 7, 2024

Reflected XSS in example-form.php in jianlinwei cool-php-captcha 0.1 through 0.2 allows remote authenticated users to run script. The page inserts the captcha request value directly into an HTML table cell without output encoding, so markup in a crafted URL becomes executable content. A victim must follow the crafted link while the example form is reachable; the script then runs within that site's browser origin.

CVSS severity6.1
Medium
EPSS probability0.75%
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 example-form.php in jianlinwei cool-php-captcha 0.1 through 0.2 allows remote authenticated users to run script. The page inserts the captcha request value directly into an HTML table cell without output encoding, so markup in a crafted URL becomes executable content. A victim must follow the crafted link while the example form is reachable; the script then runs within that site's browser origin.

The record

CVE
CVE-2009-10001
Published
Jan 13, 2023
Updated
Aug 7, 2024
Vendor
jianlinwei
Product
cool-php-captcha
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 7, 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?

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

  1. Affected versionversion=0.1
  2. Affected versionversion=0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

jianlinwei · cool-php-captchaversion=0.1; version=0.2

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

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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