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CVE-2023-47366· NVD / CVE Program· CNA mitre

The leakage of channel access token in craft_members Line 13.6.1 allows remote attackers to send malicious notifications to victims.

MediumCVSS 6.5 · v3.1—No exploit No fix recorded

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Published
Nov 9, 2023
Updated
Jun 17, 2026
EPSS
0.4% · 27th percentile
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Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
linecorpline

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linecorp line13.6.1

Same product

linecorp: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-5554Lack of TLS certificate verification in log transmission of a financial module within LINE client for iOS prior to 13.16.0.
    39Monitor
  • CVE-2016-4850LINE for Windows before 4.8.3 allows man-in-the-middle attackers to execute arbitrary code.
    33Monitor
  • CVE-2023-45559An issue in Tamaki_hamanoki Line v.13.6.1 allows attackers to send crafted notifications via leakage of the channel access token.
    32Monitor
  • CVE-2023-43305An issue in studio kent mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access
    32Monitor
  • CVE-2023-43304An issue in PARK DANDAN mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access
    32Monitor
  • CVE-2023-43303An issue in craftbeer bar canvas mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channe
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2023-473640 days apartThe leakage of channel access token in nagaoka taxi Line 13.6.1 allows remote attackers to send malicious notifications to victims
    26Monitor
  • CVE-2023-473650 days apartThe leakage of channel access token in Lil.OFF-PRICE STORE Line 13.6.1 allows remote attackers to send malicious notifications to victims.
    26Monitor
  • CVE-2023-473670 days apartThe leakage of channel access token in platinum clinic Line 13.6.1 allows remote attackers to send malicious notifications to victims.
    26Monitor
  • CVE-2023-473680 days apartThe leakage of channel access token in taketorinoyu Line 13.6.1 allows remote attackers to send malicious notifications to victims.
    26Monitor
  • CVE-2023-473690 days apartThe leakage of channel access token in best_training_member Line 13.6.1 allows remote attackers to send malicious notifications.
    26Monitor
  • CVE-2023-473720 days apartThe leakage of channel access token in UPDATESALON C-LOUNGE Line 13.6.1 allows remote attackers to send malicious notifications to victims.
    26Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-326 · Inadequate Encryption Strength

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

All records