How severe is CVE-2019-17598?

CVE-2019-17598 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2019-17598 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-17598?

CVE-2019-17598 affects Lightbend Play Framework. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-17598?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-17598 published?

CVE-2019-17598 was published on 2019-11-05 and last updated on 2026-06-17.

CVE-2019-17598

CVE-2019-17598 is a high-severity vulnerability in Lightbend Play Framework with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-326.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Lightbend Play Framework
Published: 2019-11-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-17598?: 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.
How severe is CVE-2019-17598?: CVE-2019-17598 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2019-17598 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-17598?: CVE-2019-17598 affects Lightbend Play Framework. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-17598?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-17598 published?: CVE-2019-17598 was published on 2019-11-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:lightbend:play_framework:*:*:*:*:*:*:*:*

More vulnerabilities in Lightbend Play Framework

CVE-2014-3630 — Critical (CVSS 9.8): XML external entity (XXE) vulnerability in the Java XML processing functionality in Play before 2.2.6 and 2.3.x before…
CVE-2022-31018 — High (CVSS 7.5): Play Framework is a web framework for Java and Scala. A denial of service vulnerability has been discovered in verions…
CVE-2020-27196 — High (CVSS 7.5): An issue was discovered in PlayJava in Play Framework 2.6.0 through 2.8.2. The body parsing of HTTP requests eagerly…
CVE-2020-26883 — High (CVSS 7.5): In Play Framework 2.6.0 through 2.8.2, stack consumption can occur because of unbounded recursion during parsing of…
CVE-2020-26882 — High (CVSS 7.5): In Play Framework 2.6.0 through 2.8.2, data amplification can occur when an application accepts multipart/form-data…
CVE-2018-13864 — High (CVSS 7.5): A directory traversal vulnerability has been found in the Assets controller in Play Framework 2.6.12 through 2.6.15…

All CVEs affecting Lightbend Play Framework →

Other CWE-326 (Inadequate Encryption Strength) vulnerabilities

CVE-2026-44523 — Critical (CVSS 10.0): Note Mark is an open-source note-taking application. Prior to 0.19.4, no minimum length or entropy is enforced on the…
CVE-2020-6966 — Critical (CVSS 10.0): In ApexPro Telemetry Server Versions 4.2 and prior, CARESCAPE Telemetry Server v4.2 & prior, Clinical Information…
CVE-2014-9199 — Critical (CVSS 10.0): The Clorius Controls Java web client before 01.00.0009g allows remote attackers to discover credentials by sniffing the…
CVE-2018-25272 — Critical (CVSS 9.8): ELBA5 5.8.0 contains a remote code execution vulnerability that allows attackers to obtain database credentials and…
CVE-2025-12478 — Critical (CVSS 9.8): Non-Compliant TLS Configuration.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5 .
CVE-2022-24116 — Critical (CVSS 9.8): Certain General Electric Renewable Energy products have inadequate encryption strength. This affects iNET and iNET II…

Browse all CWE-326 (Inadequate Encryption Strength) vulnerabilities →