CVE-2025-34114
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 client-side security misconfiguration vulnerability exists in OpenBlow whistleblowing platform across multiple versions and default deployments, due to the absence of critical HTTP response headers including Content-Security-Policy, Referrer-Policy, Permissions-Policy, Cross-Origin-Embedder-Policy, and Cross-Origin-Resource-Policy. This omission weakens browser-level defenses and exposes users to cross-site scripting (XSS), clickjacking, and referer leakage. Although some instances attempt to enforce CSP via HTML <meta> tags, this method is ineffective, as modern browsers rely on header-based enforcement to reliably block inline scripts and untrusted resources.
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 confidenceOpenBlow whistleblowing platform fails to include critical HTTP security headers in responses, including Content-Security-Policy, Referrer-Policy, Permissions-Policy, Cross-Origin-Embedder-Policy, and Cross-Origin-Resource-Policy. This configuration gap removes browser-enforced protections against XSS, clickjacking, and referer leakage. While some instances attempt CSP via HTML meta tags, this approach is ineffective as modern browsers require header-based CSP enforcement.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.
-
Confirm OpenBlow is runningAccess the suspected OpenBlow instance via browser or check if the application responds to HTTP requests at its expected URL. Identify the base URL of the whistleblowing platform.Affected if OpenBlow is accessible and running in your environment
-
Retrieve HTTP response headersUse a tool like curl -I <openblow_url>, browser developer tools (Network tab), or a header inspection tool to capture the HTTP response headers from the main page or any authenticated endpoint.Affected if Unable to retrieve headers from the OpenBlow application
-
Check for Content-Security-Policy headerInspect the response headers for the presence of Content-Security-Policy header. Note that CSP delivered via HTML meta tags does not count as effective protection.Affected if Content-Security-Policy header is absent from HTTP responses (even if CSP meta tags exist in HTML)
-
Check for Referrer-Policy headerInspect the response headers for the presence of Referrer-Policy header.Affected if Referrer-Policy header is absent from HTTP responses
-
Check for Permissions-Policy headerInspect the response headers for the presence of Permissions-Policy header.Affected if Permissions-Policy header is absent from HTTP responses
-
Check for Cross-Origin headersInspect the response headers for the presence of Cross-Origin-Embedder-Policy and Cross-Origin-Resource-Policy headers.Affected if Both Cross-Origin-Embedder-Policy and Cross-Origin-Resource-Policy headers are absent from HTTP responses
Your environment is affected if any of the five security headers (Content-Security-Policy, Referrer-Policy, Permissions-Policy, Cross-Origin-Embedder-Policy, Cross-Origin-Resource-Policy) are missing from HTTP responses, regardless of whether CSP meta tags exist in the HTML.
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 dataConfigure the web server (Apache/Nginx) to include all missing security headers with appropriate policies, ensuring CSP is delivered via HTTP headers rather than HTML meta tags to enable reliable enforcement of inline script blocking.
- Consultation4.0 h
- Implementation4.0 h
- Testing8.0 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 $5,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-34114 — 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-2025-34114 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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