CVE-2018-18898

7.5 HIGH 2% exploit odds No fix listed

What it is

The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 2.4% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2019-03-21 16:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 01:48 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.4% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2019-03-21 16:00 UTC
Last modified: 2026-06-17 01:48 UTC
Exploit probability: 2.4% · EPSS, next 30 days
Weakness: CWE-400 · Uncontrolled resource consumption
Record status: Modified

Affected

Bestpractical Request Tracker ≤ 4.4.0
Fedoraproject Fedora 28
Fedoraproject Fedora 29
Canonical Ubuntu Linux 16.04
Canonical Ubuntu Linux 18.04
Debian Linux 8.0
Debian Linux 10.0

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Is it in your code?

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References

NVD record · CVE.org record