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CVE Record

CVE-2023-31818: An issue found in Marukyu Line v.13.4.1 allows a remote attacker to gain access to sensitive information vi...

An issue found in Marukyu Line v.13.4.1 allows a remote attacker to gain access to sensitive information via the channel access token in the miniapp function.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2023-31818 describes an information exposure issue in Marukyu Line v13.4.1. The report says a remote attacker could access sensitive information through a channel access token in the miniapp function. The public record does not provide CVSS, CWE, vendor-fixed version, or clear product identifiers beyond that description. Exposure appears limited to organizations running or depending on Marukyu Line v13.4.1 and its miniapp function. The CVE affected-product metadata is listed as n/a, so asset owners must verify product usage directly. Prioritize verification if the organization uses Marukyu Line miniapps or relies on channel access tokens. Business urgency is hard to score because public severity and remediation details are incomplete. Mitigation focus: Check Marukyu guidance for a fixed release or configuration advisory.; Inventory any use of Marukyu Line v13.4.1 and the miniapp function.; Rotate channel access tokens that may have been exposed..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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Credential and access behavior lookup

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CVE-2023-31818 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
2Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

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ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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