How severe is CVE-2021-26682?

CVE-2021-26682 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-2021-26682 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-2021-26682?

CVE-2021-26682 primarily affects Arubanetworks Clearpass Policy Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-26682?

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

When was CVE-2021-26682 published?

CVE-2021-26682 was published on 2021-02-23 and last updated on 2026-06-17.

CVE-2021-26682

CVE-2021-26682 is a medium-severity vulnerability in Arubanetworks Clearpass Policy Manager 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: Arubanetworks Clearpass Policy Manager
Published: 2021-02-23
Last modified: 2026-06-17

Description

A remote reflected cross-site scripting (XSS) vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HF1, 6.7.14-HF1. A vulnerability in the guest portal interface of ClearPass could allow a remote attacker to conduct a reflected cross-site scripting (XSS) attack against a user of the portal. A successful exploit could allow an attacker to execute arbitrary script code in a victim’s browser in the context of the guest portal interface.

Frequently asked questions

What is CVE-2021-26682?: A remote reflected cross-site scripting (XSS) vulnerability was discovered in Aruba ClearPass Policy Manager version(s): Prior to 6.9.5, 6.8.8-HF1, 6.7.14-HF1. A vulnerability in the guest portal interface of ClearPass could allow a remote attacker to conduct a reflected cross-site scripting (XSS) attack against a user of the portal. A successful exploit could allow an attacker to execute arbitrary script code in a victim’s browser in the context of the guest portal interface.
How severe is CVE-2021-26682?: CVE-2021-26682 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-2021-26682 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-2021-26682?: CVE-2021-26682 primarily affects Arubanetworks Clearpass Policy Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-26682?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26682 published?: CVE-2021-26682 was published on 2021-02-23 and last updated on 2026-06-17.

References

https://www.arubanetworks.com/assets/alert/ARUBA-PSA-2021-004.txt

Affected products (3)

cpe:2.3:a:arubanetworks:clearpass_policy_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:arubanetworks:clearpass_policy_manager:6.7.14:-:*:*:*:*:*:*
cpe:2.3:a:arubanetworks:clearpass_policy_manager:6.8.8:-:*:*:*:*:*:*

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