CVE-2021-45476Network attack vector

Browser data disclosure via reflected script injection

Published Oct 27, 2022 · Updated May 18, 2026

Reflected XSS in Yordam Library Automation System before 19.02 allows remote attackers to run script in a victim's browser. Public records identify no affected endpoint or parameter; they report only that untrusted request data is returned without neutralization. The documented consequence is limited to browser-context data disclosure, and exploitation requires victim interaction but no account.

CVSS severity4.7
Medium
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 Yordam Library Automation System before 19.02 allows remote attackers to run script in a victim's browser. Public records identify no affected endpoint or parameter; they report only that untrusted request data is returned without neutralization. The documented consequence is limited to browser-context data disclosure, and exploitation requires victim interaction but no account.

The record

CVE
CVE-2021-45476
Published
Oct 27, 2022
Updated
May 18, 2026
Vendor
Yordam Information Technology Consulting Education and Electronic Systems Industry and Trade Inc.
Product
Yordam Library Automation System
Classifications
CWE-79, CAPEC-591, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 27, 2022CVE publishedPublication date reported by the CVE source.
  2. May 18, 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=unspecified <19.02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yordam Information Technology Consulting Education and Electronic Systems Industry and Trade Inc. · Yordam Library Automation Systemversion=unspecified <19.02

Published CVSS scores

6.1NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.7Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
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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