What is CVE-2021-27788?

CVE-2021-27788 is a high-severity vulnerability in Hcl Software Verse, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2023-03-10.

How severe is CVE-2021-27788?

High severity. CVSS v3 base score is 8.3 out of 10.

XSS in Hcl Software Verse

CVE-2021-27788

HCL Verse is susceptible to a Cross Site Scripting (XSS) vulnerability. By tricking a user into clicking a crafted URL, a remote unauthenticated attacker could execute script in a victim's web browser to perform operations as the victim and/or steal the victim's cookies, session tokens, or other sensitive information.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-03-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L.

EPSS exploit prediction

EPSS: 0.006 (44.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Hcl Software Verse — versions 2.x
Hcltech Verse

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support.hcltechsw.com/csm (Vendor Advisory)

Frequently asked questions

What is CVE-2021-27788?: CVE-2021-27788 is a high-severity vulnerability in Hcl Software Verse, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2023-03-10.
How severe is CVE-2021-27788?: High severity. CVSS v3 base score is 8.3 out of 10.