CVE-2022-28820Public exploitNetwork attack vector

Browser script execution via unsanitized page-compare parameters

Published Apr 21, 2022 · Updated Sep 17, 2024

Reflected XSS in Adobe Experience Manager ACS Commons 5.1.x and earlier allows remote attackers to run script in AEM Author via crafted links. The page-compare.html endpoint copies the a and b GET parameters into the response without validation or sanitization, reflecting attacker-controlled markup into the victim's browser. Exploitation requires a victim with AEM Author access to follow the link, enabling script execution in that browser context with confidentiality and integrity impact but no service interruption.

CVSS severity6.1
Medium
EPSS probability1.06%
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 Adobe Experience Manager ACS Commons 5.1.x and earlier allows remote attackers to run script in AEM Author via crafted links. The page-compare.html endpoint copies the a and b GET parameters into the response without validation or sanitization, reflecting attacker-controlled markup into the victim's browser. Exploitation requires a victim with AEM Author access to follow the link, enabling script execution in that browser context with confidentiality and integrity impact but no service interruption.

The record

CVE
CVE-2022-28820
Published
Apr 21, 2022
Updated
Sep 17, 2024
Vendor
Adobe
Product
Adobe Experience Manager
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 21, 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=unspecified <=5.1.x
  2. Affected versionversion=unspecified <=None

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Experience Managerversion=unspecified <=5.1.x; version=unspecified <=None

Published CVSS scores

6.1NVDCVSS: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 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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