How severe is CVE-2020-4080?

CVE-2020-4080 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-2020-4080 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-2020-4080?

CVE-2020-4080 primarily affects Hcltech Domino. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4080?

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

When was CVE-2020-4080 published?

CVE-2020-4080 was published on 2020-12-18 and last updated on 2026-06-17.

CVE-2020-4080

CVE-2020-4080 is a medium-severity vulnerability in Hcltech Domino 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% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hcltech Domino
Published: 2020-12-18
Last modified: 2026-06-17

Description

HCL Verse v10 and v11 is susceptible to a Stored Cross-Site Scripting (XSS) vulnerability due to improper handling of message content. An unauthenticated remote attacker could exploit this vulnerability using specially-crafted markup to execute script in a victim's web browser within the security context of the hosting Web site and/or steal the victim's cookie-based authentication credentials.

Frequently asked questions

What is CVE-2020-4080?: HCL Verse v10 and v11 is susceptible to a Stored Cross-Site Scripting (XSS) vulnerability due to improper handling of message content. An unauthenticated remote attacker could exploit this vulnerability using specially-crafted markup to execute script in a victim's web browser within the security context of the hosting Web site and/or steal the victim's cookie-based authentication credentials.
How severe is CVE-2020-4080?: CVE-2020-4080 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-2020-4080 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-2020-4080?: CVE-2020-4080 primarily affects Hcltech Domino. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4080?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4080 published?: CVE-2020-4080 was published on 2020-12-18 and last updated on 2026-06-17.

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0085887

Affected products (10)

cpe:2.3:a:hcltech:domino:10.0.0:*:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:10.0.1:-:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:10.0.1:fix_pack_1:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:10.0.1:fix_pack_2:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:10.0.1:fix_pack_3:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:10.0.1:fix_pack_4:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:10.0.1:fix_pack_5:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:11.0:*:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:11.0.1:-:*:*:*:*:*:*
cpe:2.3:a:hcltech:domino:11.0.1:fix_pack_1:*:*:*:*:*:*

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