Security readout for executives and security teams
Plain-English summary
MongoDB Server 4.4.0 can be crashed or made unavailable by a specially crafted query from an authenticated user allowed to run database queries. The issue is availability-only, but it can disrupt applications that depend on the affected database service.
Executive priority
Treat as a scheduled but important availability fix. Prioritize affected production MongoDB 4.4.0 systems, especially those supporting customer-facing or revenue-critical applications.
Technical view
CVE-2020-7926 is a denial-of-service flaw in MongoDB Server 4.4 before 4.4.1. A permitted database query can violate an invariant in the server selection subsystem. CVSS 3.1 is 6.5, with network access, low attack complexity, low privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is limited to MongoDB Server v4.4 deployments before 4.4.1. Versions before 4.4 are stated as not affected. Risk is higher where many users or application accounts can issue database queries.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not in KEV. Exploitation requires an authorized query-capable user or a compromised account, not unauthenticated access.
Researcher notes
The public description names the vulnerable condition but does not provide detailed failure mechanics. Analysis should stay focused on version exposure, authenticated query paths, and availability monitoring rather than exploit reproduction.
Mitigation direction
- Upgrade affected MongoDB Server 4.4 deployments to 4.4.1 or later.
- Confirm MongoDB vendor guidance for supported upgrade paths.
- Limit database query privileges to trusted users and application accounts.
- Reduce network exposure of MongoDB services where possible.
- Monitor affected services for availability instability until remediated.
Validation and detection
- Inventory MongoDB Server versions and identify 4.4 releases before 4.4.1.
- Confirm production, staging, and backup database nodes are included.
- Review query-capable users and application accounts on affected instances.
- Check change records for successful upgrade to 4.4.1 or later.
- Review monitoring for unexplained database restarts or availability drops.
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-755: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2020-7926 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
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:L/UI:N/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.mongodb.org/browse/SERVER-50170CVE reference · x_refsource_CONFIRM
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 Handling of Exceptional Conditions
Improper Handling of Exceptional Conditions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.