Security readout for executives and security teams
Plain-English summary
JetBrains Hub versions before 2025.3.119807 have an authentication bypass that could allow administrative actions without logging in. For organizations using Hub, this is high business urgency because unauthorized administration can affect user, project, and access-management workflows. No provided source confirms active exploitation.
Executive priority
Prioritize remediation immediately for any active JetBrains Hub deployment. This is a critical unauthenticated admin-action issue, but current provided evidence does not confirm exploitation in the wild. Patch first, then validate exposure and review administrative activity.
Technical view
CVE-2026-25848 is a CWE-306 missing authentication issue in JetBrains Hub before 2025.3.119807. CVSS 3.1 is 9.1: network-accessible, low complexity, no privileges, no user interaction, with high confidentiality and integrity impact and no availability impact stated.
Likely exposure
Exposure is likely limited to organizations running JetBrains Hub before 2025.3.119807, especially if the Hub instance is reachable over internal or external networks. The provided affected-version data is sparse, so confirm product/version directly against JetBrains guidance.
Exploitation context
The record describes authentication bypass enabling administrative actions. The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation or public exploit availability. Treat internet-exposed Hub instances as urgent due to unauthenticated network attack conditions.
Researcher notes
Evidence is concise: the CVE description and JetBrains reference identify the flaw and fixed-before boundary. The affected entry in the bundle is not detailed beyond Hub and version context. Do not assume additional JetBrains products are affected without vendor confirmation.
Mitigation direction
- Upgrade JetBrains Hub to 2025.3.119807 or later.
- Review JetBrains fixed-issues guidance for any environment-specific instructions.
- Restrict Hub network exposure until patched, where operationally feasible.
- Prioritize externally reachable or identity-critical Hub instances first.
Validation and detection
- Inventory all JetBrains Hub deployments and owners.
- Verify each Hub instance version is 2025.3.119807 or later.
- Confirm whether any Hub instance is internet-accessible.
- Review administrative activity logs for unexpected changes.
- Track remediation status in vulnerability management records.
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-306: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-25848 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
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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:N/UI:N/S:U/C:H/I:H/A:N3.95.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.jetbrains.com/privacy-security/issues-fixed/CVE reference
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.
Missing Authentication for Critical Function
Missing Authentication for Critical Function represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.