CVE-2021-23928Public exploitNetwork attack vector

Cross-site scripting via manifests query string

Published Jan 12, 2021 · Updated Aug 3, 2024

OX App Suite through 7.10.3 allows remote attackers to execute script in a victim browser through the ajax/apps/manifests query string. The endpoint reflects attacker-controlled query data into generated application-manifest content without adequate HTML or script-context escaping, enabling cross-site scripting when a victim follows a crafted URL. Exploitation requires network access and victim interaction; impact is limited to the victim browser's confidentiality and integrity context, with no reported server availability effect.

CVSS severity6.1
Medium
EPSS probability1.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OX App Suite through 7.10.3 allows remote attackers to execute script in a victim browser through the ajax/apps/manifests query string. The endpoint reflects attacker-controlled query data into generated application-manifest content without adequate HTML or script-context escaping, enabling cross-site scripting when a victim follows a crafted URL. Exploitation requires network access and victim interaction; impact is limited to the victim browser's confidentiality and integrity context, with no reported server availability effect.

The record

CVE
CVE-2021-23928
Published
Jan 12, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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