VDB-344987 · CVE-2026-25847 · GCVE-0-2026-25847

JetBrains PyCharm up to 2025.3.1 Jupyter Viewer Page cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in JetBrains PyCharm up to 2025.3.1. Impacted is an unknown function of the component Jupyter Viewer Page. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-25847. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in JetBrains PyCharm up to 2025.3.1. It has been rated as problematic. This issue affects some unknown processing of the component Jupyter Viewer Page. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

In JetBrains PyCharm before 2025.3.2 a DOM-based XSS on Jupyter viewer page was possible

It is possible to read the advisory at jetbrains.com. The identification of this vulnerability is CVE-2026-25847 since 02/06/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 2025.3.2 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

JetBrains

Name

PyCharm

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.8

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔒

CNA Base Score: 8.2
CNA Vector (JetBrains): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PyCharm 2025.3.2

Timelineinfo

02/06/2026 CVE reserved
02/09/2026 +3 days Advisory disclosed
02/09/2026 +0 days VulDB entry created
02/19/2026 +10 days VulDB entry last update

Sourcesinfo

Advisory: jetbrains.com
Status: Confirmed

CVE: CVE-2026-25847 (🔒)
GCVE (CVE): GCVE-0-2026-25847
GCVE (VulDB): GCVE-100-344987

Entryinfo

Created: 02/09/2026 13:11
Updated: 02/19/2026 02:35
Changes: 02/09/2026 13:11 (64), 02/19/2026 02:35 (12)
Complete: 🔍
Cache ID: 216::103