Security readout for executives and security teams
Plain-English summary
ShowDoc 2.4.2 is reported to have a CSRF flaw that can add members to a team. If an exposed instance is used for internal documentation, unauthorized team membership could expose sensitive project content or change collaboration access. Severity is not scored in the provided sources.
Executive priority
Prioritize if ShowDoc stores sensitive internal documentation or is reachable by many users. Business risk is unauthorized access expansion, but urgency cannot be precisely scored from the supplied evidence.
Technical view
The reported issue is in server/index.php?s=/api/teamMember/save in ShowDoc 2.4.2. The CVE description says CSRF can add members to a team. The bundle does not provide CVSS, CWE, authentication details, vendor advisory, or patch information.
Likely exposure
Exposure is most relevant to organizations running ShowDoc 2.4.2, especially where users remain authenticated and team membership controls sensitive documentation. The provided affected-product metadata is incomplete, so asset confirmation is required.
Exploitation context
A public GitHub PoC reference is listed, but KEV is false and no provided source reports active exploitation. Treat public exploit availability as a validation signal, not proof of in-the-wild activity.
Researcher notes
The source bundle supports the endpoint, version, and CSRF impact, but not root cause detail, prerequisites, CVSS, CWE, or remediation. Avoid assuming broader ShowDoc versions are affected without vendor or code evidence.
Mitigation direction
- Inventory ShowDoc deployments and identify any 2.4.2 instances.
- Check official ShowDoc guidance for fixed versions or configuration mitigations.
- Restrict access to ShowDoc instances until upgrade status is confirmed.
- Review team membership and remove unexpected or unauthorized users.
- Apply standard CSRF protections if maintaining a custom or forked deployment.
Validation and detection
- Confirm product version on each ShowDoc deployment.
- Review logs for unexpected teamMember/save requests and membership changes.
- Audit current team members against approved access lists.
- Verify whether vendor documentation names a patched release.
- Confirm CSRF tokens or equivalent protections exist on membership-changing requests.
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.
CVE-2018-19621 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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/CCCCCrash/POCs/tree/master/Web/showdoc/csrfCVE reference · x_refsource_MISC
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.