CVE-2016-2146

The am_read_post_data function in mod_auth_mellon before 0.11.1 does not limit the amount of data...

7.5 HighFix available

The am_read_post_data function in mod_auth_mellon before 0.11.1 does not limit the amount of data read, which allows remote attackers to cause a denial of service (worker process crash, web server deadlock, or memory consumption) via a large amount of POST data.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

3.40%Up 2.3 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2016-2146
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-119
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-2146
Updated: 2026-11-02

EUVDEUVD-2016-3247 No score

Record: EUVD-2016-3247
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cm8g-34xp-fvpw 7.5

The am_read_post_data function in mod_auth_mellon before 0.11.1 does not limit the amount of data...

Record: GHSA-cm8g-34xp-fvpw
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-119
Updated: 2026-11-02

OSV 7.5

Record: CVE-2016-2146
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-2146 7.5

Record: DEBIAN-CVE-2016-2146
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-2146 7.5

Record: UBUNTU-CVE-2016-2146
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`libapache2-mod-auth-mellon` Debian:12	before 0.12.0-1	0.12.0-1
`libapache2-mod-auth-mellon` Debian:13	before 0.12.0-1	0.12.0-1
`libapache2-mod-auth-mellon` Debian:14	before 0.12.0-1	0.12.0-1

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected
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-2016-2146 is a high vulnerability (CVSS 7.5) in Fedoraproject Fedora, published April 15, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.40%, the 88th percentile. Fixed in libapache2-mod-auth-mellon 0.12.0-1.