CVE-2023-43300

Name: CVE-2023-43300
Creator: NVD / NIST
Published: 2023-12-07T07:15:08.54+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2023-43300 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. An issue in urban_project mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

An issue in urban_project mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token.

Metrics

CVSS 3.1

8.2/10

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

EPSS Probability

0.53%

40.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Linecorp	Line	13.6.1

References

https://github.com/syz913/CVE-reports/blob/main/CVE-2023-43300.mdThird Party Advisory
https://github.com/syz913/CVE-reports/blob/main/CVE-2023-43300.mdThird Party Advisory

Timeline

Published: Dec 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-43300?

An issue in urban_project mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token.

How severe is CVE-2023-43300?

CVE-2023-43300 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2023-43300?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-43300?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST