How severe is CVE-2023-39049?

CVE-2023-39049 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-39049 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39049?

CVE-2023-39049 affects Youmart-tokunaga Project Youmart-tokunaga. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39049?

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

When was CVE-2023-39049 published?

CVE-2023-39049 was published on 2023-09-18 and last updated on 2026-07-09.

CVE-2023-39049

CVE-2023-39049 is a medium-severity vulnerability in Youmart-tokunaga Project Youmart-tokunaga with a CVSS 3.x base score of 6.5. 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-668.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-668
Affected product: Youmart-tokunaga Project Youmart-tokunaga
Published: 2023-09-18
Last modified: 2026-07-09

Description

An information leak in youmart-tokunaga v13.6.1 allows attackers to obtain the channel access token and send crafted messages.

Frequently asked questions

What is CVE-2023-39049?: An information leak in youmart-tokunaga v13.6.1 allows attackers to obtain the channel access token and send crafted messages.
How severe is CVE-2023-39049?: CVE-2023-39049 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-39049 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39049?: CVE-2023-39049 affects Youmart-tokunaga Project Youmart-tokunaga. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39049?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-39049 published?: CVE-2023-39049 was published on 2023-09-18 and last updated on 2026-07-09.

References

https://github.com/syz913/CVE-reports/blob/main/CVE-2023-39049.md

Affected products (1)

cpe:2.3:a:youmart-tokunaga_project:youmart-tokunaga:13.6.1:*:*:*:*:*:*:*

Other CWE-668 (Exposure of Resource to Wrong Sphere) vulnerabilities

CVE-2025-2857 — Critical (CVSS 10.0): Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in…
CVE-2019-8779 — Critical (CVSS 10.0): A logic issue applied the incorrect restrictions. This issue was addressed by updating the logic to apply the correct…
CVE-2012-1846 — Critical (CVSS 10.0): Google Chrome 17.0.963.66 and earlier allows remote attackers to bypass the sandbox protection mechanism by leveraging…
CVE-2022-43684 — Critical (CVSS 9.9): ServiceNow has released patches and an upgrade that address an Access Control List (ACL) bypass issue in ServiceNow…
CVE-2022-24900 — Critical (CVSS 9.9): Piano LED Visualizer is software that allows LED lights to light up as a person plays a piano connected to a computer.…
CVE-2019-16541 — Critical (CVSS 9.9): Jenkins JIRA Plugin 3.0.10 and earlier does not declare the correct (folder) scope for per-folder Jira site…

Browse all CWE-668 (Exposure of Resource to Wrong Sphere) vulnerabilities →