How severe is CVE-2023-43994?

CVE-2023-43994 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-43994 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43994?

CVE-2023-43994 affects Linecorp Line. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43994?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-43994 have an EU (EUVD) identifier?

Yes. CVE-2023-43994 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48353.

When was CVE-2023-43994 published?

CVE-2023-43994 was published on 2024-01-24 and last updated on 2026-06-17.

CVE-2023-43994

CVE-2023-43994 is a medium-severity vulnerability in Linecorp Line with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-48353
Weakness: CWE-200
Affected product: Linecorp Line
Published: 2024-01-24
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2023-43994?: An issue in Cleaning_makotoya 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-2023-43994?: CVE-2023-43994 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-43994 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43994?: CVE-2023-43994 affects Linecorp Line. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43994?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-43994 have an EU (EUVD) identifier?: Yes. CVE-2023-43994 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48353.
When was CVE-2023-43994 published?: CVE-2023-43994 was published on 2024-01-24 and last updated on 2026-06-17.

References

https://github.com/syz913/CVE-reports/blob/main/CVE-2023-43994.md

Affected products (1)

cpe:2.3:a:linecorp:line:13.6.1:*:*:*:*:*:*:*

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