How severe is CVE-2021-41791?

CVE-2021-41791 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-41791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41791?

CVE-2021-41791 primarily affects Alfresco Community Share. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-41791?

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

When was CVE-2021-41791 published?

CVE-2021-41791 was published on 2021-10-21 and last updated on 2026-06-17.

CVE-2021-41791

CVE-2021-41791 is a medium-severity vulnerability in Alfresco Community Share with a CVSS 3.x base score of 5.4. 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: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Alfresco Community Share
Published: 2021-10-21
Last modified: 2026-06-17

Description

An issue was discovered in Hyland org.alfresco:share through 7.0.0.2 and org.alfresco:community-share through 7.0. An evasion of the XSS filter for HTML input validation in the Alfresco Share User Interface leads to stored XSS that could be exploited by an attacker (given that he has privileges on the content collaboration features).

Frequently asked questions

What is CVE-2021-41791?: An issue was discovered in Hyland org.alfresco:share through 7.0.0.2 and org.alfresco:community-share through 7.0. An evasion of the XSS filter for HTML input validation in the Alfresco Share User Interface leads to stored XSS that could be exploited by an attacker (given that he has privileges on the content collaboration features).
How severe is CVE-2021-41791?: CVE-2021-41791 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-41791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41791?: CVE-2021-41791 primarily affects Alfresco Community Share. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-41791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41791 published?: CVE-2021-41791 was published on 2021-10-21 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:alfresco:community_share:*:*:*:*:*:*:*:*
cpe:2.3:a:alfresco:share:*:*:*:*:*:*:*:*
cpe:2.3:a:alfresco:share:7.0:*:*:*:*:*:*:*
cpe:2.3:a:alfresco:share:7.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:alfresco:share:7.0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:alfresco:share:7.0.1:*:*:*:*:*:*:*

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