Security readout for executives and security teams
Plain-English summary
CVE-2023-39049 describes an information leak in youmart-tokunaga v13.6.1 that can expose a channel access token. If that token is valid, an attacker could send crafted messages as the connected channel. Public sources do not provide CVSS scoring, affected metadata, or a confirmed fix.
Executive priority
Prioritize verification if the named project is present in your environment. There is no public emergency signal in the provided sources, but exposed messaging tokens can create brand, fraud, and trust impact.
Technical view
The record reports token disclosure in youmart-tokunaga v13.6.1, with downstream impact of crafted message sending using the exposed channel access token. The source bundle does not identify a CWE, root cause, exploit prerequisites, fixed version, or vendor remediation.
Likely exposure
Exposure appears limited to organizations running youmart-tokunaga v13.6.1 or deployments derived from it. The CVE affected-product metadata is incomplete, so inventory confirmation is required.
Exploitation context
The CVE is not listed as CISA KEV in the bundle, and no cited source confirms active exploitation. The practical risk depends on whether a reachable deployment exposes a valid channel access token.
Researcher notes
Evidence is sparse and largely limited to the CVE description and one GitHub report reference. Do not assume broader product impact, exploit availability, or a patch without additional primary-source confirmation.
Mitigation direction
- Identify any use of youmart-tokunaga v13.6.1 or derived deployments.
- Check project or vendor guidance for a fixed release or official workaround.
- Rotate any channel access tokens that may have been exposed.
- Restrict token privileges and remove unnecessary message-sending capability where possible.
- Monitor connected channels for unexpected or crafted messages.
Validation and detection
- Search asset inventory and repositories for youmart-tokunaga v13.6.1 references.
- Confirm whether any deployment exposes channel access tokens to unauthenticated users.
- Review application logs for unusual token access or message-sending activity.
- Verify token rotation status for affected channel integrations.
- Track the CVE record and reference repository for remediation updates.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Credential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-39049 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
SSVC decision data
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/syz913/CVE-reports/blob/main/CVE-2023-39049.mdCVE reference, mitre
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.