CVE-2021-47967Public exploitNetwork attack vector

Browser script execution via reflected request inputs

Published May 15, 2026 · Updated May 15, 2026

Reflected XSS in PHP Timeclock 1.04 allows remote attackers to execute arbitrary JavaScript in users' browsers via crafted requests. The login.php, timeclock.php, audit.php, timerpt.php, and total_hours.php handlers return URL-path suffixes or from_date and to_date values into HTML without neutralizing executable markup. No account is required, but a user must open the crafted reflected-XSS response; the script then runs in that site's browser context.

CVSS severity5.1
Medium
EPSS probability0.21%
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 PHP Timeclock 1.04 allows remote attackers to execute arbitrary JavaScript in users' browsers via crafted requests. The login.php, timeclock.php, audit.php, timerpt.php, and total_hours.php handlers return URL-path suffixes or from_date and to_date values into HTML without neutralizing executable markup. No account is required, but a user must open the crafted reflected-XSS response; the script then runs in that site's browser context.

The record

CVE
CVE-2021-47967
Published
May 15, 2026
Updated
May 15, 2026
Vendor
PHP Timeclock Project
Product
PHP Timeclock
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 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=1.04

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

PHP Timeclock Project · PHP Timeclockversion=1.04

Published CVSS scores

6.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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