What is CVE-2016-2146?

CVE-2016-2146 is a high-severity vulnerability in Uninett Mod Auth Mellon, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2016-04-15.

How severe is CVE-2016-2146?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Uninett Mod Auth Mellon

CVE-2016-2146

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.

Vulnerability class: Buffer Overflow

Published 2016-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.034 (88.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000

Affected products

Uninett Mod Auth Mellon
Fedoraproject Fedora — versions 23

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

sympa.uninett.no/lists/uninett.no/arc/modmellon/2016-03/msg00000.html (mailing-list)
github.com/UNINETT/mod_auth_mellon/pull/71 (Patch)
lists.fedoraproject.org/pipermail/package-announce/2016-March/179085.html (vendor-advisory)

Frequently asked questions

What is CVE-2016-2146?: CVE-2016-2146 is a high-severity vulnerability in Uninett Mod Auth Mellon, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2016-04-15.
How severe is CVE-2016-2146?: High severity. CVSS v3 base score is 7.5 out of 10.