CVE-2021-3539
CVE-2021-3539 is a medium-severity vulnerability in Espocrm with a CVSS 3.x base score of 6.3. 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 6.3)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Espocrm
- Published:
- Last modified:
Description
EspoCRM 6.1.6 and prior suffers from a persistent (type II) cross-site scripting (XSS) vulnerability in processing user-supplied avatar images. This issue was fixed in version 6.1.7 of the product.
Frequently asked questions
- What is CVE-2021-3539?
- EspoCRM 6.1.6 and prior suffers from a persistent (type II) cross-site scripting (XSS) vulnerability in processing user-supplied avatar images. This issue was fixed in version 6.1.7 of the product.
- How severe is CVE-2021-3539?
- CVE-2021-3539 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2021-3539 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-3539?
- CVE-2021-3539 affects Espocrm. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-3539?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-3539 published?
- CVE-2021-3539 was published on 2021-08-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:espocrm:espocrm:*:*:*:*:*:*:*:*
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