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CVE-2023-39740

22
FAUCET Score

CVE-2023-39740 describes a client secret leakage vulnerability in Onigiriya-musubee Line version 13.6.1. This flaw allows an unauthenticated attacker to obtain the channel access token, enabling them to send unauthorized broadcast messages. Rated 8.2 HIGH on the CVSS scale, the vulnerability has a network attack vector and low complexity, posing a significant risk of high confidentiality impact and low integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
13.6.1CPE matchmatch criteria
cpe:2.3:a:linecorp:onigiriya-musubee:13.6.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.58%
Probability of exploitation in next 30 days
EPSS Percentile
44.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0058 is in the 21st percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

github.com / syz913/CVE-reports/blob/main/CVE-2023-39740.md
ExploitThird Party Advisory
liff.line.me / 1657597257-0ozj8DwJ
Product