CVE-2022-27546Network attack vector

Script execution via unvalidated form input

Published Aug 29, 2022 · Updated Sep 17, 2024

Reflected XSS in HCL iNotes 9 through 12 allows remote attackers to run script in a victim's browser via a crafted URL. The web client improperly validates user-supplied input from a form POST request before returning it to the victim's browser. Exploitation requires a victim to follow the URL, after which script runs in the site's security context and can steal cookie-based authentication credentials.

CVSS severity8.3
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in HCL iNotes 9 through 12 allows remote attackers to run script in a victim's browser via a crafted URL. The web client improperly validates user-supplied input from a form POST request before returning it to the victim's browser. Exploitation requires a victim to follow the URL, after which script runs in the site's security context and can steal cookie-based authentication credentials.

The record

CVE
CVE-2022-27546
Published
Aug 29, 2022
Updated
Sep 17, 2024
Vendor
HCL Software
Product
HCL iNotes
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9, 10, 11, 12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HCL Software · HCL iNotesversion=9, 10, 11, 12

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.3HCL SoftwareCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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