CVE-2026-25848VulnerabilityPublished 9 Feb 2026Updated 26 Feb 2026

CVE-2026-25848: JetBrains Hub · Missing Authentication

Affects JetBrains HubSource CVE Database V5

Not known to be exploited · CVSS 9.1 Critical : upgrade to 2025.3.119807 as a priority.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

9.1Critical

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 2025.3.119807

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 9 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade JetBrains Hub to 2025.3.119807.

Affected software

Product	Affected	Fixed in
JetBrainsHub	Affected <2025.3.119807	Fixed in 2025.3.119807

AI-suggested

1. Immediately restrict network access to JetBrains Hub instances to trusted IP addresses and internal networks only, using firewalls or network segmentation. 2. Implement strict monitoring and logging of all administrative actions within JetBrains Hub to detect anomalous behavior indicative of exploitation attempts. 3. Enforce multi-factor authentication (MFA) on all administrative accounts where possible, as a compensating control until a patch is available. 4. Regularly review user roles and permissions to minimize the number of users with administrative privileges. 5. Stay alert for official security advisories and patches from JetBrains and apply updates promptly once released. 6. Consider deploying Web Application Firewalls (WAF) with custom rules to detect and block suspicious requests targeting authentication bypass patterns. 7. Conduct internal security assessments and penetration tests focusing on JetBrains Hub to identify any exploitation attempts or related vulnerabilities. 8. Educate development and security teams about the risks and signs of exploitation related to this vulnerability to improve incident response readiness.

Description

In JetBrains Hub before 2025.3.119807 authentication bypass allowing administrative actions was possible

Impact

The impact of CVE-2026-25848 is significant for organizations using JetBrains Hub as it allows attackers to gain unauthorized administrative privileges. This can lead to unauthorized access to sensitive project data, modification or deletion of user accounts, escalation of privileges, and potential disruption of development workflows. Confidentiality is severely compromised as attackers can view or exfiltrate sensitive information. Integrity is also at high risk since attackers can alter configurations or user permissions, potentially introducing backdoors or persistent access. Although availability is not directly impacted, the administrative control gained could be leveraged to disrupt services indirectly. Organizations with large development teams or those managing critical software projects are particularly vulnerable, as the compromise of JetBrains Hub can cascade into broader security breaches across integrated JetBrains products and connected systems. The lack of required authentication and user interaction makes this vulnerability highly exploitable, increasing the urgency for remediation.

CWE-306Missing Authentication for Critical Function (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #21OWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Architecture and Design
Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks…
Architecture and Design
Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V1.2.3 (opens in a new tab)
V1.2.2 (opens in a new tab)
V1.2.4 (opens in a new tab)
Attack patterns
Choosing Message Identifier (opens in a new tab)
Force the System to Reset Values (opens in a new tab)
Using Unpublished Interfaces or Functionality (opens in a new tab)
Cross Site Request Forgery (opens in a new tab)
Communication Channel Manipulation (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

jetbrains.com/privacy-security/issues-fixed/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 27 Feb 2026, 08:09 UTC

WeaknessesCWE-306

Technical details

References

Community reviews

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