Home/CVE/A flaw was found in mod_auth_openidc before version 2.4.1. An open redirect issue exists in URLs with a slash and backsl
CVE

CVE-2019-20479

A flaw was found in mod_auth_openidc before version 2.4.1. An open redirect issue exists in URLs with a slash and backsl

A flaw was found in mod_auth_openidc before version 2.4.1. An open redirect issue exists in URLs with a slash and backslash at the beginning.

MEDIUM · CVSS 6.1 EPSS 0.00605
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
▤

Affected Products & Versions

4
openidc mod auth openidc< 2.4.1
debian linuxall versions
fedoraproject fedoraall versions
opensuse leapall versions
▣

Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD20 Feb 2020 · 06:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
⚑

Vendor Advisories

6
suse-csafSUSE-SU-2025:4532-1
suse-csafopenSUSE-SU-2020:0376-1
suse-csafSUSE-SU-2020:0705-1
suse-csafSUSE-SU-2020:0706-1
rhsaRHSA-2020:3970Moderate
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00036.htmlMailing ListThird Party Advisory
https://github.com/zmartzone/mod_auth_openidc/commit/02431c0adfa30f478cf2eb20ed6ea51fdf446be7Patch
https://github.com/zmartzone/mod_auth_openidc/pull/453PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00035.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00028.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00034.html
Intelligence Graph · click any node to traverse
CVETechnique ActorTool Family
drag to reposition · click any node to traverse · button top-right enlarges
External lookups - second-class, for what we don’t hold ourselves
NVDCVE.orgCISAVulnersExploit-DBGitHub PoCVulnCheck KEVGreyNoise
Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities
Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs
Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures
Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1
About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service
threatengine.sh  ·  Open-source threat intelligence platform  ·  100+ authoritative sources  ·  Every fact traces to its origin