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CVE Record

CVE-2026-24766: NocoDB Vulnerable to Prototype Pollution in Connection Test Endpoint, Leading to DoS

NocoDB is software for building databases as spreadsheets. Prior to version 0.301.0, an authenticated user with org-level-creator permissions can exploit prototype pollution in the `/api/v2/meta/connection/test` endpoint, causing all database write operations to fail application-wide until server restart. While the pollution technically bypasses SUPER_ADMIN authorization checks, no practical privileged actions can be performed because database operations fail immediately after pollution. Version 0.301.0 patches the issue.

MediumCVSS 4.9Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-24766 affects NocoDB before 0.301.0. A highly privileged authenticated user can trigger a flaw that makes database write operations fail across the application until the server is restarted. This is primarily an availability issue, not confirmed data theft or full admin compromise.

Executive priority

Treat as a near-term operational reliability fix. Prioritize upgrade for production NocoDB instances, especially shared or externally reachable deployments. The reported impact is disruptive but constrained by high privilege requirements and no cited active exploitation.

Technical view

The issue is prototype pollution in NocoDB’s /api/v2/meta/connection/test endpoint. Users with org-level-creator permissions can cause application-wide database write failures. The advisory notes a SUPER_ADMIN authorization check bypass is technically possible, but practical privileged actions fail because database operations stop working immediately after pollution.

Likely exposure

Exposure is limited to NocoDB deployments running versions earlier than 0.301.0 where authenticated users can hold org-level-creator permissions. Internet exposure increases operational risk, but exploitation still requires high privileges according to the CVSS vector.

Exploitation context

No source provided indicates active exploitation, and the CVE is not marked as CISA KEV. The main business impact is denial of service for write operations until restart, potentially disrupting workflows that depend on NocoDB updates or metadata changes.

Researcher notes

The public details identify CWE-1321 prototype pollution and a specific authenticated endpoint. Avoid assuming broader privilege escalation beyond the advisory’s stated limitation. Validation should focus on version, role exposure, and write-failure symptoms rather than exploit reproduction.

Mitigation direction

  • Upgrade NocoDB to version 0.301.0 or later.
  • Review vendor advisory GHSA-95ff-46g6-6gw9 for current guidance.
  • Limit org-level-creator permissions to trusted users.
  • Monitor for unexpected application-wide write failures.

Validation and detection

  • Inventory NocoDB deployments and record running versions.
  • Confirm whether any instance is below 0.301.0.
  • Review users with org-level-creator permissions.
  • Check incident logs for unexplained write failures requiring restart.
Prepared
Confidence
high
Sources
3

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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cwe · low confidence lookup

CWE-1321: Exact CWE lookup

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description · low confidence lookup

Database 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.

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cve · low confidence lookup

CVE-2026-24766 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.9 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H1.23.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.9Medium
CVSS 3.1 vector shape for CVE-2026-24766Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
nocodbnocodb< 0.301.0Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-1321 · source CWE mapping

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.