CVE-2022-48612Public exploitNetwork attack vector

Universal XSS via incomplete URL validation

Published Oct 16, 2023 · Updated Sep 16, 2024

Universal XSS in ClassLink OneClick Extension 10.7 and earlier allows remote attackers to inject JavaScript into any webpage. URL-control checks omit the required regular expression at some extension entry points, allowing non-ClassLink domains to trigger the extension. A user must visit a crafted website; injected JavaScript can then read or alter page data across unrelated websites in the browser.

CVSS severity6.1
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Universal XSS in ClassLink OneClick Extension 10.7 and earlier allows remote attackers to inject JavaScript into any webpage. URL-control checks omit the required regular expression at some extension entry points, allowing non-ClassLink domains to trigger the extension. A user must visit a crafted website; injected JavaScript can then read or alter page data across unrelated websites in the browser.

The record

CVE
CVE-2022-48612
Published
Oct 16, 2023
Updated
Sep 16, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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