How severe is CVE-2021-36150?

CVE-2021-36150 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-36150 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36150?

CVE-2021-36150 affects Silverstripe. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36150?

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

When was CVE-2021-36150 published?

CVE-2021-36150 was published on 2021-10-07 and last updated on 2026-06-17.

CVE-2021-36150

CVE-2021-36150 is a medium-severity vulnerability in Silverstripe with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Silverstripe
Published: 2021-10-07
Last modified: 2026-06-17

Description

SilverStripe Framework through 4.8.1 allows XSS.

Frequently asked questions

What is CVE-2021-36150?: SilverStripe Framework through 4.8.1 allows XSS.
How severe is CVE-2021-36150?: CVE-2021-36150 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-36150 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36150?: CVE-2021-36150 affects Silverstripe. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36150?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36150 published?: CVE-2021-36150 was published on 2021-10-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:*

More vulnerabilities in Silverstripe

CVE-2007-2321 — Critical (CVSS 10.0): Unspecified vulnerability in the search functionality in SilverStripe 2.0.0 has unknown impact and attack vectors.
CVE-2019-12204 — Critical (CVSS 9.8): In SilverStripe through 4.3.3, a missing warning about leaving install.php in a public webroot can lead to…
CVE-2019-5715 — Critical (CVSS 9.8): All versions of SilverStripe 3 prior to 3.6.7 and 3.7.3, and all versions of SilverStripe 4 prior to 4.0.7, 4.1.5,…
CVE-2019-12437 — High (CVSS 8.8): In SilverStripe through 4.3.3, the previous fix for SS-2018-007 does not completely mitigate the risk of CSRF in…
CVE-2020-6164 — High (CVSS 7.5): In SilverStripe through 4.5.0, a specific URL path configured by default through the silverstripe/framework module can…
CVE-2020-9280 — High (CVSS 7.5): In SilverStripe through 4.5, files uploaded via Forms to folders migrated from Silverstripe CMS 3.x may be put to the…

All CVEs affecting Silverstripe →

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 →