How severe is CVE-2021-39267?

CVE-2021-39267 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-2021-39267 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39267?

CVE-2021-39267 affects Salesagility Suitecrm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39267?

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

When was CVE-2021-39267 published?

CVE-2021-39267 was published on 2021-08-18 and last updated on 2026-06-17.

CVE-2021-39267

CVE-2021-39267 is a medium-severity vulnerability in Salesagility Suitecrm 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: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Salesagility Suitecrm
Published: 2021-08-18
Last modified: 2026-06-17

Description

Persistent cross-site scripting (XSS) in the web interface of SuiteCRM before 7.11.19 allows a remote attacker to introduce arbitrary JavaScript via a Content-Type Filter bypass to upload malicious files. This occurs because text/html is blocked, but other types that allow JavaScript execution (such as text/xml) are not blocked.

Frequently asked questions

What is CVE-2021-39267?: Persistent cross-site scripting (XSS) in the web interface of SuiteCRM before 7.11.19 allows a remote attacker to introduce arbitrary JavaScript via a Content-Type Filter bypass to upload malicious files. This occurs because text/html is blocked, but other types that allow JavaScript execution (such as text/xml) are not blocked.
How severe is CVE-2021-39267?: CVE-2021-39267 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-2021-39267 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39267?: CVE-2021-39267 affects Salesagility Suitecrm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39267?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-39267 published?: CVE-2021-39267 was published on 2021-08-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:salesagility:suitecrm:*:*:*:*:*:*:*:*

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