CVE-2019-18860 Details
Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2019-18860
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
5.5 Probability of exploitation activity being observed over the next 30 days (92st percentile)
CVSS score for CVE-2019-18860
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
6.1 Medium

CVE-2019-18860 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,143,586 75.46%
BR 91,456 6.03%
GB 86,848 5.73%
RO 57,615 3.80%
CA 34,818 2.30%
CN 16,568 1.09%
DE 13,772 0.91%
JP 11,875 0.78%
CH 9,691 0.64%
IN 9,684 0.64%

Is CVE-2019-18860 part of your extended attack surface? Bitsight helps security leaders rapidly identify exposure and detect threats in order to prioritize, communicate, and mitigate risk.

View interactive product tours

CVE-2019-18860 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 226,493 91.89%
Telecommunications 17,127 6.95%
Utilities 1,668 0.68%
Education 623 0.25%
Media/Entertainment 145 0.06%
Government/Politics 140 0.06%
Business Services 57 0.02%
Retail 43 0.02%
Engineering 32 0.01%
Finance 31 0.01%

Bitsight, the leading provider in Cyber Risk Management, introduced the next-generation internet scanner Bitsight Groma in May 2024. This technology continuously scans the entire internet to discover assets, collect asset attribution evidence, and identify an ever-growing set of security observations, such as vulnerabilities and misconfigurations. Groma’s scanning activities presently encompass:


  • 40 million-plus monitored organizations
  • 250 million-plus host names
  • 4 billion-plus routable IPv4 and IPv6 addresses

Greynoise’s recent study testifies the speed of Bitsight Groma.

Bitsight data discovery
Governance charcoal background

Bitsight TRACE team investigates security incidents and identifies vulnerabilities and threats.

View latest security research 

See what you’re up against across the expanding attack surface. Prioritize what matters most. And mitigate where you’re most vulnerable.

External Attack Surface Management