CVE-2021-41139Network attack vector

Browser script execution via unvalidated date parameter

Published Oct 13, 2021 · Updated Aug 4, 2024

Reflected XSS in Anuko Time Tracker before 1.19.30.5600 allows remote attackers to execute JavaScript in a logged-in user's browser. The time.php endpoint accepts the date query parameter without validating its database-date format, allowing script-bearing input to reach the rendered page. Exploitation requires social engineering a logged-in user into opening a crafted link; the injected script executes in the application's browser origin.

CVSS severity8.1
High
EPSS probability1.02%
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 Anuko Time Tracker before 1.19.30.5600 allows remote attackers to execute JavaScript in a logged-in user's browser. The time.php endpoint accepts the date query parameter without validating its database-date format, allowing script-bearing input to reach the rendered page. Exploitation requires social engineering a logged-in user into opening a crafted link; the injected script executes in the application's browser origin.

The record

CVE
CVE-2021-41139
Published
Oct 13, 2021
Updated
Aug 4, 2024
Vendor
Anuko International Ltd.
Product
Anuko Time Tracker
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=< 1.19.30.5600

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Anuko International Ltd. · Anuko Time Trackerversion=< 1.19.30.5600

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
4.3NIST NVDAV:N/AC:M/Au:N/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 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')
T1204.001Malicious Link

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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