CVE-2021-34650Network attack vector

Authenticated script execution via unescaped error parameter

Published Sep 20, 2021 · Updated Mar 31, 2025

Reflected XSS in eID Easy 4.6 and earlier allows remote authenticated users to inject scripts through the error parameter in admin.php. The administrative page writes the request's error value into HTML without output encoding, causing a crafted value to execute in a visiting user's browser. Exploitation requires low-privileged access and user interaction; successful script execution can read or alter data available to the victim's browser session.

CVSS severity5.4
Medium
EPSS probability0.78%
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 eID Easy 4.6 and earlier allows remote authenticated users to inject scripts through the error parameter in admin.php. The administrative page writes the request's error value into HTML without output encoding, causing a crafted value to execute in a visiting user's browser. Exploitation requires low-privileged access and user interaction; successful script execution can read or alter data available to the victim's browser session.

The record

CVE
CVE-2021-34650
Published
Sep 20, 2021
Updated
Mar 31, 2025
Vendor
eID Easy
Product
eID Easy
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2025Record 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=4.6 <=4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

eID Easy · eID Easyversion=4.6 <=4.6

Published CVSS scores

5.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
Privilegesauthenticated
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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