CVE-2026-25846
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 2025.3.119033 access tokens could be exposed in Mailbox logs
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 confidenceIn JetBrains YouTrack versions prior to 2025.3.119033, access tokens used for mailbox integration were being written in plaintext to system logs, allowing anyone with access to those logs to obtain the credentials.
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< 2025.3.119033CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 versionLocate the installed YouTrack version in the administration console or via the /api/admin/version endpointAffected if The installed version is earlier than 2025.3.119033
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Verify mailbox integration is configuredNavigate to Settings > Mailbox in the YouTrack administration interface and check if any mailbox accounts are configured with access tokensAffected if Mailbox integration is configured with access tokens on an affected version
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Review system logs for plaintext tokensExamine YouTrack system log files (typically found in the logs directory) for patterns matching OAuth tokens, API keys, or access tokens associated with mailbox configurationAffected if Plaintext access tokens appear in the logs, indicating credentials have been exposed
A user is affected if they run YouTrack versions before 2025.3.119033, have mailbox integration configured with access tokens, and those tokens appear in system logs.
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 · scoped2025.3.119033
Upgrade YouTrack to version 2025.3.119033 or later. Additionally, rotate any access tokens that may have been used with affected versions and review logs for signs of unauthorized credential access.
2025.3.119033 or later
- Upgrade YouTrack to version 2025.3.119033 or later to resolve the access token exposure in Mailbox logs
- After upgrading, review Mailbox logs for any sensitive information that may have been logged prior to the patch
- If any access tokens were potentially exposed, rotate those tokens immediately to prevent unauthorized access
- Verify the fix by confirming that new Mailbox logs no longer contain access token information
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25846 — 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-2026-25846 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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