How severe is CVE-2026-28697?

CVE-2026-28697 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28697 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28697?

CVE-2026-28697 primarily affects Craftcms Craft Cms. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-28697?

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

Does CVE-2026-28697 have an EU (EUVD) identifier?

Yes. CVE-2026-28697 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9447.

When was CVE-2026-28697 published?

CVE-2026-28697 was published on 2026-03-04 and last updated on 2026-06-17.

CVE-2026-28697

CVE-2026-28697 is a critical-severity vulnerability in Craftcms Craft Cms with a CVSS 3.x base score of 9.1. 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-1336.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 9.4
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9447
Weakness: CWE-1336
Affected product: Craftcms Craft Cms
Published: 2026-03-04
Last modified: 2026-06-17

Description

Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, an authenticated administrator can achieve Remote Code Execution (RCE) by injecting a Server-Side Template Injection (SSTI) payload into Twig template fields (e.g., Email Templates). By calling the craft.app.fs.write() method, an attacker can write a malicious PHP script to a web-accessible directory and subsequently access it via the browser to execute arbitrary system commands. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.

Frequently asked questions

What is CVE-2026-28697?: Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, an authenticated administrator can achieve Remote Code Execution (RCE) by injecting a Server-Side Template Injection (SSTI) payload into Twig template fields (e.g., Email Templates). By calling the craft.app.fs.write() method, an attacker can write a malicious PHP script to a web-accessible directory and subsequently access it via the browser to execute arbitrary system commands. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.
How severe is CVE-2026-28697?: CVE-2026-28697 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28697 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28697?: CVE-2026-28697 primarily affects Craftcms Craft Cms. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-28697?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-28697 have an EU (EUVD) identifier?: Yes. CVE-2026-28697 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9447.
When was CVE-2026-28697 published?: CVE-2026-28697 was published on 2026-03-04 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*

More vulnerabilities in Craftcms Craft Cms

CVE-2025-32432 — Critical (CVSS 10.0): Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. Starting from…
CVE-2023-41892 — Critical (CVSS 10.0): Craft CMS is a platform for creating digital experiences. This is a high-impact, low-complexity attack vector. Users…
CVE-2026-32267 — Critical (CVSS 9.8): Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.6 and from version…
CVE-2024-56145 — Critical (CVSS 9.8): Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. Users of affected…
CVE-2024-37843 — Critical (CVSS 9.8): Craft CMS up to v3.7.31 was discovered to contain a SQL injection vulnerability via the GraphQL API endpoint.
CVE-2021-27903 — Critical (CVSS 9.8): An issue was discovered in Craft CMS before 3.6.7. In some circumstances, a potential Remote Code Execution…

All CVEs affecting Craftcms Craft Cms →

Other CWE-1336 vulnerabilities

CVE-2025-53833 — Critical (CVSS 10.0): LaRecipe is an application that allows users to create documentation with Markdown inside a Laravel app. Versions prior…
CVE-2024-32651 — Critical (CVSS 10.0): changedetection.io is an open source web page change detection, website watcher, restock monitor and notification…
CVE-2026-45312 — Critical (CVSS 9.9): RAGFlow is an open-source RAG (Retrieval-Augmented Generation) engine. In 0.24.0 and earlier, a Jinja2 template…
CVE-2026-9558 — Critical (CVSS 9.9): A Server-Side Template Injection (SSTI) vulnerability exists in Mautic's theme engine. The platform renders uploaded…
CVE-2026-33897 — Critical (CVSS 9.9): Incus is a system container and virtual machine manager. Prior to version 6.23.0, instance template files can be used…
CVE-2026-1868 — Critical (CVSS 9.9): GitLab has remediated a vulnerability in the Duo Workflow Service component of GitLab AI Gateway affecting all versions…

Browse all CWE-1336 vulnerabilities →