CVE-2019-17598

Name: CVE-2019-17598
Creator: NVD / NIST
Published: 2019-11-05T15:15:12.153+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2019-17598 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Lightbend Play Framework 2.5.x through 2.6.23. When configured to make requests using an authenticated HTTP proxy, play-ws may sometimes, typically under high load, when connecting to a target host using https, expose the proxy credentials to the target host.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

An issue was discovered in Lightbend Play Framework 2.5.x through 2.6.23. When configured to make requests using an authenticated HTTP proxy, play-ws may sometimes, typically under high load, when connecting to a target host using https, expose the proxy credentials to the target host.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-326

Affected Software

Vendor	Product	Versions
Lightbend	Play Framework	>= 2.5.0, <= 2.5.19
Lightbend	Play Framework	>= 2.6.0, <= 2.6.23

References

https://www.playframework.com/security/vulnerabilityRelease Notes, Vendor Advisory
https://www.playframework.com/security/vulnerability/CVE-2019-17598-PlayWSHttpConnectAuthorizationHeadersVendor Advisory
https://www.playframework.com/security/vulnerabilityRelease Notes, Vendor Advisory
https://www.playframework.com/security/vulnerability/CVE-2019-17598-PlayWSHttpConnectAuthorizationHeadersVendor Advisory

Timeline

Published: Nov 5, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17598?

How severe is CVE-2019-17598?

CVE-2019-17598 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17598?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17598?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST