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Vulnerability record · CVE-2019-14857 · published 26 November 2019

CVE-2019-14857: Mod auth openidc open redirect vulnerability

Openidc · Mod Auth Openidc

A flaw was found in mod_auth_openidc before version 2.4.0.1. An open redirect issue exists in URLs with trailing slashes similar to CVE-2019-3877 in mod_auth_mellon.

6.1 CVSS 3.1 Medium EPSS 1.6% · top 25.1% CWE-601 · Open redirect
6.1CVSS 3.1 base score, v2 5.8
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

A flaw was found in mod_auth_openidc before version 2.4.0.1. An open redirect issue exists in URLs with trailing slashes similar to CVE-2019-3877 in mod_auth_mellon.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14857 Issue TrackingPatchThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/commit/5c15dfb08106c2451c2c44ce7ace6813c216ba75 PatchThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/commit/ce37080c6aea30aabae8b4a9b4eea7808445cc8e PatchThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/pull/451 PatchThird Party Advisory
https://groups.google.com/forum/#%21topic/mod_auth_openidc/boy1Ba3Gdk4
https://lists.debian.org/debian-lts-announce/2020/07/msg00028.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14857 Issue TrackingPatchThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/commit/5c15dfb08106c2451c2c44ce7ace6813c216ba75 PatchThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/commit/ce37080c6aea30aabae8b4a9b4eea7808445cc8e PatchThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/pull/451 PatchThird Party Advisory
https://groups.google.com/forum/#%21topic/mod_auth_openidc/boy1Ba3Gdk4
https://lists.debian.org/debian-lts-announce/2020/07/msg00028.html

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.6CVE-2017-6413Mod auth openidc improper authentication vulnerabilityThe "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc) module before 2.1.6 for the Apache HTTP Server does not skip …EPSS 4.3%8.6CVE-2017-6062Mod auth openidc improper authentication vulnerabilityThe "OpenID Connect Relying Party and OAuth 2.0 Resource Server" (aka mod_auth_openidc) module before 2.1.5 for the Apache HTTP Server does not skip …EPSS 3.6%7.5CVE-2024-24814Mod auth openidc uncontrolled resource consumption vulnerabilitymod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Re…EPSS 1.3%7.5CVE-2023-28625Mod auth openidc null pointer dereference vulnerabilitymod_auth_openidc is an authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functi…EPSS 1.3%7.5CVE-2021-32785Mod auth openidc vulnerabilitymod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenti…EPSS 2.7%7.5CVE-2021-20718Mod auth openidc uncontrolled resource consumption vulnerabilitymod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.EPSS 3.4%7.5CVE-2017-6059Mod auth openidc improper input validation vulnerabilityMod_auth_openidc.c in the Ping Identity OpenID Connect authentication module for Apache (aka mod_auth_openidc) before 2.14 allows remote attackers to…EPSS 5.2%6.1CVE-2022-23527Mod auth openidc open redirect vulnerabilitymod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server. Versions prior to 2.4.12.2 are vulne…EPSS 0.91%

Source: NIST National Vulnerability Database (record CVE-2019-14857), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.