CVE-2025-53959VulnerabilityPublished 15 Jul 2025

CVE-2025-53959: JetBrains YouTrack · CWE-862

Affects JetBrains YouTrackSource CVE Database V5

Not known to be exploited · CVSS 7.6 High.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

7.6High

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Changed
Confidentiality: High
Integrity: Low
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: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Changed: An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.
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: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on 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 15 Jul 2025
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 2026-10-25.

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

Affected software

Product	Affected	Fixed in
JetBrains YouTrack	Affected =0	Fixed in–

AI-suggested

European organizations should prioritize the following specific mitigation steps: 1) Immediately verify the version of YouTrack in use and plan an upgrade to the fixed versions (2025.2.86069 or later, 2024.3.85077 or later, 2025.1.86199 or later) once patches are released by JetBrains. 2) Until patches are available, restrict access to the administrative API endpoints by implementing network-level controls such as IP whitelisting or VPN-only access to reduce exposure. 3) Enforce strict authentication and authorization policies, including multi-factor authentication (MFA) for all administrative users to reduce the risk of credential compromise. 4) Monitor email logs and YouTrack API usage for anomalous activities indicative of spoofing attempts or unauthorized API calls. 5) Educate users about the risk of phishing and spoofed emails, emphasizing verification of unexpected administrative communications. 6) Consider deploying email security solutions with advanced spoofing detection and DMARC/DKIM/SPF enforcement to mitigate the impact of spoofed emails. 7) Review integration points between YouTrack and other systems to ensure that compromised credentials or spoofed communications cannot propagate further. These targeted actions go beyond generic advice by focusing on immediate risk reduction through access controls, monitoring, and user awareness while awaiting official patches.

Description

In JetBrains YouTrack before 2025.2.86069, 2024.3.85077, 2025.1.86199 email spoofing via an administrative API was possible

Impact

For European organizations using JetBrains YouTrack, this vulnerability poses a significant risk. The ability to spoof emails from administrative accounts can undermine trust in internal communications, potentially leading to successful phishing campaigns, credential theft, or unauthorized access to sensitive project information. Given YouTrack's role in managing development workflows, exploitation could result in leakage of confidential project data or manipulation of issue tracking processes. This could disrupt software development lifecycles and expose intellectual property. Additionally, the vulnerability's exploitation could facilitate lateral movement within corporate networks if attackers use spoofed emails to escalate privileges or distribute malware. The impact is particularly critical for organizations in regulated sectors such as finance, healthcare, and government, where data confidentiality and integrity are paramount. Furthermore, the cross-scope nature of the vulnerability means that compromise could extend beyond the YouTrack application, affecting other integrated systems and services. The requirement for low privileges and remote network access lowers the barrier for attackers, increasing the likelihood of exploitation if mitigations are not promptly applied.

CWE-862Missing Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #4OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
Attack patterns
Exploitation of Thunderbolt Protection Flaws (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 15 Jul 2025, 16:46 UTC

WeaknessesCWE-862

Technical details

References

Community reviews

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