How severe is CVE-2021-3010?

CVE-2021-3010 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-2021-3010 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3010?

CVE-2021-3010 affects Opentext Content Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3010?

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

When was CVE-2021-3010 published?

CVE-2021-3010 was published on 2021-02-26 and last updated on 2026-06-17.

CVE-2021-3010

CVE-2021-3010 is a medium-severity vulnerability in Opentext Content Server 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% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Opentext Content Server
Published: 2021-02-26
Last modified: 2026-06-17

Description

There are multiple persistent cross-site scripting (XSS) vulnerabilities in the web interface of OpenText Content Server Version 20.3. The application allows a remote attacker to introduce arbitrary JavaScript by crafting malicious form values that are later not sanitized.

Frequently asked questions

What is CVE-2021-3010?: There are multiple persistent cross-site scripting (XSS) vulnerabilities in the web interface of OpenText Content Server Version 20.3. The application allows a remote attacker to introduce arbitrary JavaScript by crafting malicious form values that are later not sanitized.
How severe is CVE-2021-3010?: CVE-2021-3010 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-2021-3010 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3010?: CVE-2021-3010 affects Opentext Content Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3010?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-3010 published?: CVE-2021-3010 was published on 2021-02-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opentext:content_server:20.3:*:*:*:*:*:*:*

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