CVE-2023-26466
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 · uneditedA user with non-Admin access can change a configuration file on the client to modify the Server URL.
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 · moderate confidenceThis is an authorization vulnerability where a non-privileged user can modify a client-side configuration file to change the Server URL. This allows a low-privilege attacker to redirect client connections to an arbitrary server, potentially enabling data theft, man-in-the-middle attacks, or service disruption.
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>= 3.1.1, < 3.1.30CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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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Identify Pega Synchronization Engine installationLocate the Pega Synchronization Engine installation directory or check system services for 'Pega Sync Engine' or 'PegaSyncEngine' processesAffected if The software is present on the system
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Determine installed versionCheck the application version information, typically found in an about dialog, version file, or manifest within the Pega Synchronization Engine installation directoryAffected if Installed version falls within >= 3.1.1 and < 3.1.30
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Locate client configuration fileSearch for configuration files in the user-accessible application data directory, typically under %APPDATA%\Pega or similar user-writable paths, looking for files named config.xml, settings.xml, or client.cfgAffected if Configuration file exists in a user-writable location
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Verify Server URL is modifiable by non-privileged usersAttempt to edit the Server URL setting in the client configuration file using a standard user account (non-admin) to confirm write access is available to low-privilege usersAffected if Non-privileged user account can successfully modify the Server URL setting in the configuration file
Environment is affected if Pega Synchronization Engine version is between 3.1.1 and 3.1.29 inclusive AND non-privileged users can modify the client-side Server URL configuration.
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 · scoped3.1.30
Implement proper server-side and client-side authorization checks to restrict modification of the Server URL configuration to Admin-level users only, and add server-side validation to reject connections to unauthorized URLs.
Synchronization Engine version 3.1.30 or later
- 1. Identify all deployments using Synchronization Engine versions between 3.1.1 and 3.1.29.
- 2. Review the Pega Support site (support.pega.com) for the 3.1.30 release notes and any associated hotfixes.
- 3. Plan an upgrade to version 3.1.30 or later in a non-production environment first.
- 4. Test the upgrade to ensure normal functionality is preserved.
- 5. Schedule a maintenance window and apply the upgrade to production environments.
- 6. Verify that non-Admin users can no longer modify the Server URL configuration file.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-26466 — 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-2023-26466 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
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