CVE-2023-43303

CVE-2023-43303 is a high-severity vulnerability in Linecorp Line with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

An issue in craftbeer bar canvas mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token (via captured network traffic).

Frequently asked questions

What is CVE-2023-43303?
An issue in craftbeer bar canvas mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token (via captured network traffic).
How severe is CVE-2023-43303?
CVE-2023-43303 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2023-43303 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43303?
CVE-2023-43303 affects Linecorp Line. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43303?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-43303 published?
CVE-2023-43303 was published on 2023-12-07 and last updated on 2026-07-05.

References

Affected products (1)

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