CVE-2022-29273Network attack vector

Browser session compromise via unencoded alias URLs

Published Feb 22, 2023 · Updated Mar 12, 2025

Stored XSS in Netgate pfSense CE 2.6.0 and earlier and pfSense Plus before 22.05 allows remote attackers to run JavaScript. firewall_alias.php displays URL and URL Table alias values on the URL and All tabs without sanitizing the input or encoding the output. The trigger is an administrator viewing the affected alias list, after which the script executes in that browser session and exposes its cookie or other session data.

CVSS severity6.1
Medium
EPSS probability59.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Netgate pfSense CE 2.6.0 and earlier and pfSense Plus before 22.05 allows remote attackers to run JavaScript. firewall_alias.php displays URL and URL Table alias values on the URL and All tabs without sanitizing the input or encoding the output. The trigger is an administrator viewing the affected alias list, after which the script executes in that browser session and exposes its cookie or other session data.

The record

CVE
CVE-2022-29273
Published
Feb 22, 2023
Updated
Mar 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 2025Record 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

6.1NIST National Vulnerability DatabaseCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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