CVE-2003-0189

The authentication module for Apache 2.0.40 through 2.0.45 on Unix does not properly handle...

5.0 MediumFix available

The authentication module for Apache 2.0.40 through 2.0.45 on Unix does not properly handle threads safely when using the crypt_r or crypt functions, which allows remote attackers to cause a denial of service (failed Basic authentication with valid usernames and passwords) when a threaded MPM is used.

Exploit likelihood

15.1%Up 7.8 points since Feb 4, 2022

What each source reports

NVD Score used 5.0

Record: CVE-2003-0189
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2003-0189
Updated: 2026-11-02

EUVDEUVD-2003-0185 No score

Record: EUVD-2003-0185
Updated: 2026-11-03

GitHub AdvisoriesGHSA-88hg-mqww-hqj3 No score

The authentication module for Apache 2.0.40 through 2.0.45 on Unix does not properly handle...

Record: GHSA-88hg-mqww-hqj3
Updated: 2026-11-02

OSVBELL-CVE-2003-0189 5.0

CVE-2003-0189 does not affect BellSoft software

Record: BELL-CVE-2003-0189
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

OSV No score

Record: CVE-2003-0189
Updated: 2026-11-02

OSVDEBIAN-CVE-2003-0189 No score

Record: DEBIAN-CVE-2003-0189
Updated: 2026-11-02

Affected products

apache http server

Affected packages

Affected packages
Package	Affected	Fixed
`apache2` Debian:12	before 2.0.46	2.0.46
`apache2` Debian:13	before 2.0.46	2.0.46
`apache2` Debian:14	before 2.0.46	2.0.46

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2003-0189 is a medium vulnerability (CVSS 5.0) in Apache Http Server, published May 30, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 15.1%, the 96th percentile. Fixed in apache2 2.0.46.

References

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