Security readout for executives and security teams
Plain-English summary
Coral Talk 4 before 4.12.1 could expose user email addresses and other sensitive information through its GraphQL API. The issue was caused by permission checks using the wrong data type. Business risk is privacy and data exposure, not system takeover based on the provided sources.
Executive priority
Prioritize remediation for internet-facing Coral Talk deployments because the issue can expose personal data. It is below emergency RCE priority from the provided evidence, but privacy impact and notification obligations may raise business urgency.
Technical view
CVE-2021-35970 affects Coral Talk 4 versions before 4.12.1. The vulnerability is an information disclosure issue in GraphQL authorization handling, where permission checks used an incorrect data type and could allow remote discovery of user fields such as email addresses.
Likely exposure
Exposure is likely limited to organizations running Coral Talk 4 before 4.12.1 with its GraphQL API reachable to users or the internet. The provided bundle does not identify affected deployments, CPEs, or cloud-managed exposure details.
Exploitation context
The source bundle says remote attackers could discover sensitive data, but it provides no exploit code, no CVSS score, and no evidence of active exploitation. CISA KEV status is false, so active exploitation should not be claimed from these sources.
Researcher notes
Focus review on GraphQL user-field authorization and the permission type mismatch described in the CVE. The public sources identify the vulnerable version boundary and fix references, but do not provide CVSS, exploitation evidence, or complete affected-product metadata.
Mitigation direction
- Upgrade Coral Talk to 4.12.1 or later.
- Review Coral project guidance and the linked fixing pull request.
- Restrict GraphQL exposure where business workflows allow.
- Review logs for unusual GraphQL user data access.
- Treat exposed email addresses as a privacy incident input.
Validation and detection
- Inventory Coral Talk instances and deployed versions.
- Confirm no production instance runs Coral Talk before 4.12.1.
- Review GraphQL API reachability from untrusted networks.
- Check whether user email fields are accessible beyond intended roles.
- Document remediation evidence for privacy and security review.
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-2021-35970 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/coralproject/talk/issues/3600CVE reference · x_refsource_MISC
- https://github.com/coralproject/talk/pull/3599CVE reference · x_refsource_MISC
- https://docs.coralproject.net/coral/api/graphql/#UserCVE reference · x_refsource_MISC
- https://github.com/coralproject/talk/compare/v4.12.0...v4.12.1CVE 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.