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CVE-2023-45889

19
FAUCET Score

CVE-2023-45889 describes a Universal Cross-Site Scripting (UXSS) vulnerability in ClassLink OneClick Extension versions up to 10.8, allowing remote attackers to inject JavaScript into any webpage. This medium-severity flaw (CVSS 6.1) has a low attack complexity and requires user interaction, potentially leading to limited data compromise and integrity issues. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.8CPE matchmatch criteria
cpe:2.3:a:classlink:oneclick:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-23
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 38th percentile among its peer group of 26,208 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.zerdle.net / classlink
Third Party Advisory
blog.zerdle.net / classlink2
ExploitThird Party Advisory