CVE-2019-3877

MEDIUM
5.8
CVSS Score
Published: March 27, 2019 at 12:19 PM UTC
Updated: June 17, 2026 at 02:35 AM UTC
5 products affected across 5 vendorsFedoraUbuntu LinuxEnterprise Linux

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Severity
MEDIUM5.8
Exploit prediction
EPSS 2%

Description

A vulnerability was found in mod_auth_mellon before v0.14.2. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apr_uri_parse function.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.14.2
Affected range stops below 0.14.2, so it looks safe — our inference, not a vendor statement

CVSS

5.8MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-601

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