CVE-2023-35054
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn JetBrains YouTrack before 2023.1.10518 stored XSS in a Markdown-rendering engine was possible
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA stored Cross-Site Scripting (XSS) vulnerability exists in JetBrains YouTrack's Markdown rendering engine in versions prior to 2023.1.10518. An attacker can embed malicious JavaScript code within Markdown content that gets stored on the server and executed when other users view the rendered content.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 2023.1.10518CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check YouTrack versionLog into YouTrack as an administrator and navigate to Administration > System > Overview, or use the command: {base-url}/api/admin/systemInfo. The version is displayed in the 'YouTrack version' field.Affected if The installed version is lower than 2023.1.10518 (e.g., 2023.1.x versions before 10518, or any version in the 2022.x, 2021.x series).
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Identify Markdown usageReview which projects and issue fields use the Markdown renderer. Check project settings under Projects > [Project Name] > Field Settings, looking for fields with 'Markdown' or 'Text (Markdown)' type.Affected if Markdown fields are in use and visible to multiple users, allowing stored XSS to propagate.
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Inspect stored Markdown contentQuery the database or export issues to identify Markdown fields containing HTML script tags, javascript: URIs, or event handlers (onclick, onerror, onload). Check the 'description' and 'comment' fields specifically.Affected if Malicious script tags or JavaScript event handlers are found embedded in Markdown content that was authored by another user.
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Review audit and server logsExamine YouTrack audit logs (Administration > System > Audit Log) and the service logs for entries containing Markdown submissions that include unusual characters or patterns typical of XSS payloads.Affected if Logs show Markdown content submissions containing <script>, javascript:, or HTML event handler attributes.
You are affected if your YouTrack installation is version 2023.1.10518 or earlier and users can create or view Markdown-rendered content from other users.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2023.1.10518
Upgrade YouTrack to version 2023.1.10518 or later. Review existing Markdown content in the system for any previously injected malicious scripts.
2023.1.10518 or later (2023.1.x branch)
- Back up your YouTrack database and installation directory before upgrading
- Download YouTrack 2023.1.10518 or later from the official JetBrains website (www.jetbrains.com)
- Stop the YouTrack service
- Extract the new version to your installation directory
- Start the YouTrack service and verify the upgrade was successful
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-35054 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-35054 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data