Blog article

Why Transitive Dependencies Are the Biggest Challenge in Open Source Security

Chip Bell
August 28, 2025

The Hidden Risk of Transitive Dependencies

The biggest challenge in modern application security isn’t the vulnerabilities you can see, it’s the ones buried deep within transitive dependencies.

These “dependencies of your dependencies” often sit several layers down in your software supply chain, invisible until an SCA tool flags them. And even then, remediation is out of your control. Unless an upstream maintainer ships a fix, your teams are left waiting.

With 70–90% of today’s application code coming from open source components (Synopsys, 2023), transitive dependencies have become one of the most pressing blockers for both security and business outcomes. Deals stall, compliance deadlines slip, and developers are forced into endless patch firefighting instead of building features.

Let’s break down why transitive dependencies are so hard to manage and why a new approach is needed.

Direct vs. Transitive Dependencies: Why the Distinction Matters

Direct dependencies 

They are the libraries your developers explicitly add to a project. These are visible, intentional, and somewhat easier to monitor. But even here, a minor version bump can cause breaking changes that demand retesting and delay releases.

Transitive dependencies

They are the libraries that your direct dependencies rely on, often several layers deep. And here’s the staggering reality: 95% of application vulnerabilities come from transitive dependencies, not direct ones (DevOps.com).

In other words: the majority of your risk isn’t even in the code your developers chose, it’s in the code hidden inside other packages, completely outside your direct control.

How Transitive Dependencies Multiply Risk

Transitive dependencies don’t just expand your attack surface, they multiply the risk in ways that make remediation far more difficult:

Unpredictable timelines

Fixes depend entirely on upstream maintainers, who may take weeks or months to release patches. In the meantime, SLAs under FedRAMP or PCI DSS 4.0 (30-day windows for critical and high-rated vulnerabilities) continue to count down.

Widespread impact

One vulnerable transitive package can appear across dozens of applications, frameworks, or microservices. A single CVE can quickly propagate, creating dozens or hundreds of instances to patch. One vulnerable package buried three layers down can ripple into hundreds of instances across microservices, multiplying your backlog overnight.

Downtime risk

Updating a transitive dependency often forces indirect upgrades of direct dependencies, which can cascade into breaking changes across your application stack. What looks like a “simple fix” can balloon into weeks of retesting and debugging.

Compliance strain

With regulations like FedRAMP, PCI DSS 4.0, NYDFS and DORA requiring proof of timely remediation, unresolved transitive vulnerabilities don’t just pose security risks; they threaten your ability to pass audits, keep certifications, and close deals.

The bottom line: transitive dependencies aren’t just a technical nuisance. They’re a business liability.

The Business Cost of Vulnerabilities in Transitive Dependencies

When transitive vulnerabilities linger unresolved, the costs ripple through the business:

Revenue risk

A single failed FedRAMP security review can stall $10M+ in government contracts (FedRAMP PMO).

Compliance penalties

PCI DSS 4.0 fines can range from $5K–$100K per month for missed remediation deadlines (Visa/Mastercard).

Developer drain

Engineers lose 8–15 hours per week to manual patching and debugging (GitHub, 2023), costing mid-sized teams ~$1.2M–$2M annually and enterprises ~$12M+.

Customer churn

In SaaS markets, even a 2–3% increase in churn due to perceived security gaps can equal $5M–$10M in lost revenue mid-market, and $50M+ for large enterprises (Gartner, 2023).

Unresolved transitive dependencies don’t just create risk,  they slow revenue, increase churn, and erode trust.

Seal Security: Closing the Gap Left by SCA Tools

Most SCA tools do a solid job of detection, including flagging and prioritizing transitive vulnerabilities. But detection is not remediation. If the dependency hasn’t been patched upstream, your teams are left waiting with no guaranteed timeline.

This is where Seal Security changes the equation. Seal doesn’t just detect vulnerabilities,  it fixes them across the entire open source stack: from application dependencies and operating systems to container base images, including legacy and EOL systems. And unlike upstream maintainers, Seal delivers backported, production-ready patches you can deploy immediately. Here’s how:

Find and fix CVEs in transitive dependencies

Seal delivers backported, production-ready patches even when upstream maintainers haven’t released updates. That means no more waiting months while compliance deadlines slip.

Avoid forced upgrades or breaking changes

Seal’s patch-in-place approach applies targeted fixes without requiring migrations, version bumps, which can break your application.

Compliance readiness

With cryptographically signed patches and SBOM-ready artifacts, Seal provides the evidence auditors demand for frameworks like FedRAMP, PCI DSS 4.0, DORA and NYDFS.

Developer productivity

By removing the burden of manual patching, developers can focus on roadmap delivery, feature innovation, and customer value instead of dependency maintenance.

The result: organizations shrink their backlog, pass audits, accelerate sales, and protect revenue  all while regaining developer productivity.

Don’t Let Transitive Dependencies Derail Your Business

Transitive dependencies are the silent culprit behind the majority of modern vulnerability backlogs. They multiply risk by hiding deep in your software supply chain, spreading widely across applications, and forcing you to depend on maintainers you don’t control.

Left unresolved, they create real business damage: stalled deals, compliance failures, developer burnout, and lost revenue. For organizations where every day of unresolved risk can mean millions in fines or delayed contracts, this isn’t a technical nuisance, it’s a business liability.

With Seal Security’s patch-in-place solution, organizations finally have a way to close the gap: fixing both direct and transitive vulnerabilities quickly, safely, and without disruption.

In short: Seal turns the hidden risk of transitive dependencies into a competitive advantage. Seal enables faster audits, stronger compliance, happier developers, and millions in revenue protection.