CVE-2019-17002Network attack vector

Insecure HTTP navigation via dragged link

Published Jan 8, 2020 · Updated Aug 5, 2024

Firefox before 70 contains a security policy bypass that lets remote attackers navigate dragged links over HTTP despite upgrade-insecure-requests. The browser fails to apply the Content Security Policy upgrade when a link is dragged from a protected page and dropped for navigation, leaving the request on an insecure scheme. Exploitation requires a victim to interact with a page that sets this directive and drag its link; the bounded consequence is possible man-in-the-middle tampering or disclosure of that navigation.

CVSS severity4.3
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Firefox before 70 contains a security policy bypass that lets remote attackers navigate dragged links over HTTP despite upgrade-insecure-requests. The browser fails to apply the Content Security Policy upgrade when a link is dragged from a protected page and dropped for navigation, leaving the request on an insecure scheme. Exploitation requires a victim to interact with a page that sets this directive and drag its link; the bounded consequence is possible man-in-the-middle tampering or disclosure of that navigation.

The record

CVE
CVE-2019-17002
Published
Jan 8, 2020
Updated
Aug 5, 2024
Vendor
Mozilla
Product
Firefox
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=before 70

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=before 70

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
4.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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