CVE-2018-15136: TitanHQ SpamTitan before 7.01 has Improper input validation

Q: How do I fix CVE-2018-15136?

spamtitan: upgrade to 7.01. Exact commands for each OS are on this page.

Q: Is CVE-2018-15136 being exploited?

CVE-2018-15136 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-15136 affect?

CVE-2018-15136 affects spamtitan. Severity is medium (CVSS 5.3). TitanHQ SpamTitan before 7.01 has Improper input validation. This allows internal attackers to bypass the anti-spam filter to send malicious emails to an entire organization by modifying the URL requests sent to the application.

Q: How urgent is CVE-2018-15136?

Priority 39/100. Public exploit reference

Routine

MEDIUM 5.3UPGRADE

CVE-2018-15136 is a medium-severity flaw (CVSS 5.3) affecting spamtitan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TitanHQ SpamTitan before 7.01 has Improper input validation. This allows internal attackers to bypass the anti-spam filter to send malicious emails to an entire organization by modifying the URL requests sent to the application.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-20
Published	2019-01-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: titanhq

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-01-30 15:29 UTCPublished CVE record published
2026-06-17 01:42 UTCUpdated Record last modified

titanhq spamtitan UPGRADE

Affected: < 7.01

Fixed in: 7.01

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy spamtitan || rpm -q spamtitan || spamtitan --version

2. UPGRADE to 7.01 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spamtitan

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spamtitan

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-15136?

spamtitan: upgrade to 7.01. Exact commands for each OS are on this page.

Is CVE-2018-15136 being exploited?

CVE-2018-15136 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-15136 affect?

CVE-2018-15136 affects spamtitan. Severity is medium (CVSS 5.3). TitanHQ SpamTitan before 7.01 has Improper input validation. This allows internal attackers to bypass the anti-spam filter to send malicious emails to an entire organization by modifying the URL requests sent to the application.

How urgent is CVE-2018-15136?

Priority 39/100. Public exploit reference

Related CVEs

CVE-2020-35658 MEDIUM 5.3 UPGRADE SpamTitan before 7.09 allows attackers to tamper with backups, because backups are not encrypted.
CVE-2020-24046 HIGH 7.2 DOWNGRADE A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07
CVE-2020-24045 HIGH 7.2 DOWNGRADE A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07
CVE-2020-11804 HIGH 8.8 DOWNGRADE An issue was discovered in Titan SpamTitan 7.07
CVE-2020-11803 HIGH 8.8 DOWNGRADE An issue was discovered in Titan SpamTitan 7.07

References

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