DEBIAN-CVE-2026-54789

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Source
https://security-tracker.debian.org/tracker/CVE-2026-54789
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54789.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-54789
Upstream
Published
2026-08-21T16:17:19Z
Modified
2026-09-17T20:01:13Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. Prior to 2.4.19.4, an out-of-bounds read and a one-byte out-of-bounds write exist in the state-cookie parser of mod_auth_openidc. The issue is fixed in version 2.4.19.4 by stopping the scan at the string terminator so a value-less token is rejected. No in-product workarounds are available. As a stop-gap, an upstream reverse proxy or WAF that rejects or normalizes malformed Cookie headers (tokens lacking =) can reduce exposure, but upgrading is the recommended remediation.

References

Affected packages

Debian:12 / libapache2-mod-auth-openidc

Package

Name
libapache2-mod-auth-openidc
Purl
pkg:deb/debian/libapache2-mod-auth-openidc?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.4.12.3-2+deb12u5

Affected versions

2.*
2.4.12.3-2
2.4.12.3-2+deb12u1
2.4.12.3-2+deb12u2
2.4.12.3-2+deb12u3
2.4.12.3-2+deb12u4

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54789.json"

Debian:13 / libapache2-mod-auth-openidc

Package

Name
libapache2-mod-auth-openidc
Purl
pkg:deb/debian/libapache2-mod-auth-openidc?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.4.17-1+deb13u1

Affected versions

2.*
2.4.17-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54789.json"

Debian:14 / libapache2-mod-auth-openidc

Package

Name
libapache2-mod-auth-openidc
Purl
pkg:deb/debian/libapache2-mod-auth-openidc?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.4.19.4-1

Affected versions

2.*
2.4.17-1
2.4.17.2-1
2.4.18-1
2.4.18.1-1
2.4.19-1
2.4.19.1-1
2.4.19.1-2
2.4.19.2-1
2.4.19.2-2
2.4.19.2-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54789.json"