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CVE-2025-57731· NVD / CVE Program· CNA JetBrains

In JetBrains YouTrack before 2025.2.92387 stored XSS was possible via Mermaid diagram content

MediumCVSS 5.4 · v3.1—No exploit Fix available
Published
Aug 20, 2025
Updated
Jun 17, 2026
EPSS
0.3% · 19th percentile
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Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.4
CNA · JetBrains
8.7
3.3 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
jetbrainsyoutrack

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • jetbrains youtrackbefore 2025.2.92387

Versions reported by the vendor

Affected version ranges reported by the assigning authority (JetBrains). Independent of NVD's CPE analysis and usually ahead of it.

  • JetBrains YouTrack

    • before 2025.2.92387affected · semver

Same product

jetbrains: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-24442JetBrains YouTrack before 2021.4.40426 was vulnerable to SSTI (Server-Side Template Injection) via FreeMarker templates.
    40Plan
  • CVE-2021-43185JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
    40Plan
  • CVE-2021-25770In JetBrains YouTrack before 2020.5.3123, server-side template injection (SSTI) was possible, which could lead to code execution.
    40Plan
  • CVE-2019-12852An SSRF attack was possible on a JetBrains YouTrack server.
    40Plan
  • CVE-2019-12867Certain actions could cause privilege escalation for issue attachments in JetBrains YouTrack.
    40Plan
  • CVE-2019-12866An Insecure Direct Object Reference, with Authorization Bypass through a User-Controlled Key, was possible in JetBrains YouTrack.
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
JetBrains YouTrack2025.2.92387Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-75048362 days apartIn JetBrains YouTrack before 2026.2.18068 stored XSS via the fenced code-block language label was possible
    32Monitor
  • CVE-2026-103493407 days apartIn JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible
    32Monitor
  • CVE-2024-50575296 days apartIn JetBrains YouTrack before 2024.3.47707 reflected XSS was possible in Widget API
    24Monitor
  • CVE-2024-50579296 days apartIn JetBrains YouTrack before 2024.3.47707 reflected XSS due to insecure link sanitization was possible
    24Monitor
  • CVE-2026-61492324 days apartIn JetBrains YouTrack before 2026.2.17394 stored XSS via article titles in digest emails was possible
    24Monitor
  • CVE-2026-100263406 days apartIn JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible
    24Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

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

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records