How severe is CVE-2018-6889?

CVE-2018-6889 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-6889 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6889?

CVE-2018-6889 affects Typesettercms Typesetter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6889?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-6889 published?

CVE-2018-6889 was published on 2018-02-12 and last updated on 2026-06-17.

CVE-2018-6889

CVE-2018-6889 is a high-severity vulnerability in Typesettercms Typesetter with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Typesettercms Typesetter
Published: 2018-02-12
Last modified: 2026-06-17

Description

An issue was discovered in Typesetter 5.1. It suffers from a Host header injection vulnerability, Using this attack, a malicious user can poison the web cache or perform advanced password reset attacks or even trigger arbitrary user re-direction.

Frequently asked questions

What is CVE-2018-6889?: An issue was discovered in Typesetter 5.1. It suffers from a Host header injection vulnerability, Using this attack, a malicious user can poison the web cache or perform advanced password reset attacks or even trigger arbitrary user re-direction.
How severe is CVE-2018-6889?: CVE-2018-6889 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-6889 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6889?: CVE-2018-6889 affects Typesettercms Typesetter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6889?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-6889 published?: CVE-2018-6889 was published on 2018-02-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:typesettercms:typesetter:5.1:*:*:*:*:*:*:*

More vulnerabilities in Typesettercms Typesetter

CVE-2022-25523 — High (CVSS 8.8): TypesetterCMS v5.1 was discovered to contain a Cross-Site Request Forgery (CSRF) which is exploited via a crafted POST…
CVE-2018-6888 — High (CVSS 8.0): An issue was discovered in Typesetter 5.1. The User Permissions page (aka Admin/Users) suffers from critical flaw of…
CVE-2020-25790 — High (CVSS 7.2): Typesetter CMS 5.x through 5.1 allows admins to upload and execute arbitrary PHP code via a .php file inside a ZIP…
CVE-2020-19511 — Medium (CVSS 6.1): Cross Site Scriptiong vulnerability in Typesetter 5.1 via the !1) className and !2) Description fields in…
CVE-2025-71166 — Medium (CVSS 5.4): Typesetter CMS versions up to and including 5.1 contain a reflected cross-site scripting (XSS) vulnerability in the…
CVE-2025-71165 — Medium (CVSS 5.4): Typesetter CMS versions up to and including 5.1 contain a reflected cross-site scripting (XSS) vulnerability in the…

All CVEs affecting Typesettercms Typesetter →

Other CWE-94 (Code Injection) vulnerabilities

CVE-2026-57624 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.46 versions.
CVE-2026-10134 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read…
CVE-2026-53576 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter…
CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
CVE-2026-25470 — Critical (CVSS 10.0): Improper Control of Generation of Code ('Code Injection') vulnerability in ACPT ACPT (Pro) - Custom Post Types Plugin…
CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

Browse all CWE-94 (Code Injection) vulnerabilities →