CVE-2021-46827Network attack vector

Script execution via unneutralized search proposals

Published Jul 13, 2022 · Updated Aug 4, 2024

Cross-site scripting in Oxygen XML WebHelp before 22.1 build 2021082006 or 23.1 build 2021090310 allows remote attackers to execute JavaScript. The search-term proposal path places specially crafted search text into generated WebHelp output without neutralizing executable JavaScript. Exploitation requires convincing a user to type the attacker-chosen expression into the output's search field, and the resulting script alters page behavior in that user's browser.

CVSS severity6.1
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Oxygen XML WebHelp before 22.1 build 2021082006 or 23.1 build 2021090310 allows remote attackers to execute JavaScript. The search-term proposal path places specially crafted search text into generated WebHelp output without neutralizing executable JavaScript. Exploitation requires convincing a user to type the attacker-chosen expression into the output's search field, and the resulting script alters page behavior in that user's browser.

The record

CVE
CVE-2021-46827
Published
Jul 13, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1204
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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')
T1204User Execution

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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