Security readout for executives and security teams
Plain-English summary
Tarkov Data Manager versions up to 2.0.0 have an authenticated SQL injection flaw. A logged-in attacker could manipulate vulnerable webhook edit and scanner API endpoints to run database queries. The main business risk is compromise of database confidentiality, integrity, and availability. A patch exists in the referenced GitHub commit, but no active exploitation is cited.
Executive priority
Prioritize remediation for any production or internet-reachable deployment. The issue requires authentication but can affect the entire database. Treat it as a high-priority application fix, particularly if many users have administrative access or the database stores operationally important data.
Technical view
CVE-2026-21856 is CWE-89 time-based blind SQL injection in Tarkov Data Manager before commit 9bdb3a75a98a7047b6d70144eb1da1655d6992a8. The vulnerable areas are the webhook edit and scanner API endpoints. CVSS 3.1 is 7.2: network exploitable, low complexity, high privileges required, no user interaction, with high CIA impact.
Likely exposure
Exposure is limited to organizations running the-hideout/tarkov-data-manager version 2.0.0 or earlier, especially where authenticated users can reach the affected API endpoints. The source does not state whether default deployments are internet-facing or how roles map to the required privileges.
Exploitation context
The CVE record and GitHub advisory describe authenticated SQL injection. CISA KEV status is false in the provided data, and no cited source claims active exploitation. Because high privileges are required, risk is higher from compromised admin accounts, malicious insiders, or overly broad access.
Researcher notes
Evidence is limited to the CVE data, GitHub advisory, and patch commit. The vulnerability is described as time-based blind SQL injection with high privileges required. No public exploit status, affected configuration details, or fixed release number beyond the commit are provided in the sources.
Mitigation direction
- Apply commit 9bdb3a75a98a7047b6d70144eb1da1655d6992a8 or a vendor release containing it.
- If no packaged release is available, follow the GitHub advisory and maintainer guidance.
- Restrict access to authenticated API endpoints to trusted administrators only.
- Review database and application logs for suspicious activity if exposure existed.
- Back up the database before applying changes.
Validation and detection
- Inventory Tarkov Data Manager deployments and identify versions at or below 2.0.0.
- Confirm whether the patched commit is present in deployed code.
- Verify access controls for webhook edit and scanner API endpoints.
- Review logs for unusual database errors, delays, or unexpected authenticated API activity.
- Track the GitHub advisory for updated remediation details.
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.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-21856 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
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/the-hideout/tarkov-data-manager/security/advisories/GHSA-4gcx-ghwc-rc78CVE reference · x_refsource_CONFIRM
- https://github.com/the-hideout/tarkov-data-manager/commit/9bdb3a75a98a7047b6d70144eb1da1655d6992a8CVE 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.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.