CVE-2022-28977Network attack vector

User redirection via multiple-slash URL bypass

Published Sep 22, 2022 · Updated Jul 9, 2026

Open redirect in Liferay Portal 7.3.1 through 7.4.2 and affected Liferay DXP releases allows remote attackers to redirect users. HtmlUtil.escapeRedirect treats crafted URLs beginning with multiple forward slashes as relative, so redirect parameters such as redirect and FORWARD_URL accept an external destination. Exploitation requires a user to trigger the crafted request, after which the application sends that user to an attacker-chosen external site.

CVSS severity6.1
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Liferay Portal 7.3.1 through 7.4.2 and affected Liferay DXP releases allows remote attackers to redirect users. HtmlUtil.escapeRedirect treats crafted URLs beginning with multiple forward slashes as relative, so redirect parameters such as redirect and FORWARD_URL accept an external destination. Exploitation requires a user to trigger the crafted request, after which the application sends that user to an attacker-chosen external site.

The record

CVE
CVE-2022-28977
Published
Sep 22, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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
6.1CISA-ADPCVSS: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-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

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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