CVE-2023-48255
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 · uneditedThe vulnerability allows an unauthenticated remote attacker to send malicious network requests containing arbitrary client-side script code and obtain its execution inside a victim’s session via a crafted URL, HTTP request, or simply by waiting for the victim to view the poisoned log.
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 a Cross-Site Scripting (XSS) vulnerability allowing unauthenticated remote attackers to inject arbitrary client-side script code that executes within victim sessions via crafted URLs, HTTP requests, or poisoned logs.
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>= 1000, <= 1500-sp2CVSS 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/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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Identify Bosch Nexo Os installed versionLocate the version information for your Bosch Nexo Os installation. This is typically found in the system administration interface, system information page, or by querying the system via its management interface or CLI tool if available.Affected if The installed version falls within the range of 1000 to 1500-sp2 inclusive.
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Confirm web interface exposureDetermine whether the Bosch Nexo Os web management interface is accessible from network locations where untrusted users could submit crafted requests. Check firewall rules, access control lists, and network segmentation configurations.Affected if The web interface is exposed to untrusted network segments or the internet without proper access restrictions.
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Review logging configurationInspect the system logging configuration to identify how user-supplied data from URLs, HTTP request parameters, or other input is handled and recorded in log files or audit trails.Affected if The logging system stores unsanitized user input from HTTP requests or URLs without proper output encoding.
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Check for existing XSS filteringExamine any existing input validation, output encoding, or web application firewall configurations that may be in place for the Nexo Os web interface.Affected if No input validation or output encoding is implemented, or existing filters can be bypassed by the methods described in the CVE.
You are affected if your Bosch Nexo Os version is between 1000 and 1500-sp2 inclusive and the web interface or logging system handles user-supplied data without proper sanitization.
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.
From vendor dataImplement robust input validation and output encoding for all user-supplied data, and apply Content Security Policy headers to prevent script execution in unexpected contexts.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48255 — 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-2023-48255 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
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