How severe is CVE-2023-4136?

CVE-2023-4136 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-4136 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4136?

CVE-2023-4136 affects Craftercms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4136?

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-2023-4136 published?

CVE-2023-4136 was published on 2023-08-03 and last updated on 2026-06-17.

CVE-2023-4136

CVE-2023-4136 is a high-severity vulnerability in Craftercms with a CVSS 3.x base score of 7.4. 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: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Craftercms
Published: 2023-08-03
Last modified: 2026-06-17

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in CrafterCMS Engine on Windows, MacOS, Linux, x86, ARM, 64 bit allows Reflected XSS.This issue affects CrafterCMS: from 4.0.0 through 4.0.2, from 3.1.0 through 3.1.27.

Frequently asked questions

What is CVE-2023-4136?: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in CrafterCMS Engine on Windows, MacOS, Linux, x86, ARM, 64 bit allows Reflected XSS.This issue affects CrafterCMS: from 4.0.0 through 4.0.2, from 3.1.0 through 3.1.27.
How severe is CVE-2023-4136?: CVE-2023-4136 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-4136 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4136?: CVE-2023-4136 affects Craftercms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4136?: 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-2023-4136 published?: CVE-2023-4136 was published on 2023-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:craftercms:craftercms:*:*:*:*:*:*:*:*

More vulnerabilities in Craftercms

CVE-2025-6384 — Critical (CVSS 9.1): Improper Control of Dynamically-Managed Code Resources vulnerability in Crafter Studio of CrafterCMS allows…
CVE-2025-0502 — Critical (CVSS 9.1): Transmission of Private Resources into a New Sphere ('Resource Leak') vulnerability in CrafterCMS Engine on Linux,…
CVE-2023-33194 — Low (CVSS 3.7): Craft is a CMS for creating custom digital experiences on the web.The platform does not filter input and encode output…

All CVEs affecting Craftercms →

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 →