THREATPORT/VULNERABILITY/CVE-2019-17495
CRITICAL SEVERITY

CVE-2019-17495

Swagger Ui vulnerability

CVSS
9.8
EPSS
5.6%
EPSS pct
92th
Exploited
No known
A Cascading Style Sheets (CSS) injection vulnerability in Swagger UI before 3.23.11 allows attackers to use the Relative Path Overwrite (RPO) technique to perform CSS-based input field value exfiltration, such as exfiltration of a CSRF token value. In other words, this product intentionally allows the embedding of untrusted JSON data from remote servers, but it was not previously known that <style>@import within the JSON data was a functional attack method.
Affected vendor
Smartbear
Affected product
Swagger Ui
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-352 — Cross-Site Request Forgery (CSRF)
Published
2019-10-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 5.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2019-17495

  • Confirm whether Smartbear Swagger Ui is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-17495.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-17495

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-17495 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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