How severe is CVE-2018-6905?

CVE-2018-6905 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-6905 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6905?

CVE-2018-6905 affects Typo3. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6905?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-6905 published?

CVE-2018-6905 was published on 2018-04-08 and last updated on 2026-06-17.

CVE-2018-6905

CVE-2018-6905 is a medium-severity vulnerability in Typo3 with a CVSS 3.x base score of 4.8. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Typo3
Published: 2018-04-08
Last modified: 2026-06-17

Description

The page module in TYPO3 before 8.7.11, and 9.1.0, has XSS via $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'], as demonstrated by an admin entering a crafted site name during the installation process.

Frequently asked questions

What is CVE-2018-6905?: The page module in TYPO3 before 8.7.11, and 9.1.0, has XSS via $GLOBALS['TYPO3_CONF_VARS']['SYS']['sitename'], as demonstrated by an admin entering a crafted site name during the installation process.
How severe is CVE-2018-6905?: CVE-2018-6905 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-6905 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6905?: CVE-2018-6905 affects Typo3. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6905?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6905 published?: CVE-2018-6905 was published on 2018-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*

More vulnerabilities in Typo3

CVE-2009-0258 — Critical (CVSS 10.0): The Indexed Search Engine (indexed_search) system extension in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and…
CVE-2011-3583 — Critical (CVSS 9.8): It was found that Typo3 Core versions 4.5.0 - 4.5.5 uses prepared statements that, if the parameter values are not…
CVE-2011-4628 — Critical (CVSS 9.8): TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication…
CVE-2025-59017 — High (CVSS 8.8): Missing authorization checks in the Backend Routing of TYPO3 CMS versions 9.0.0‑9.5.54, 10.0.0‑10.4.53,…
CVE-2023-24814 — High (CVSS 8.8): TYPO3 is a free and open source Content Management Framework released under the GNU General Public License. In affected…
CVE-2021-41113 — High (CVSS 8.8): TYPO3 is an open source PHP based web content management system released under the GNU GPL. It has been discovered that…

All CVEs affecting Typo3 →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →