CVE-2022-0820Network attack vector

Stored XSS via unsanitized shortcode usage

Published Mar 10, 2022 · Updated Aug 2, 2024

Stored XSS in Orchard Core before 1.3.0 allows remote authenticated users to persist browser-executable markup through shortcode settings. The Shortcodes administrator CreatePost and Edit actions stored the Usage field unchanged, and the shortcode picker later treated that value as HTML. Shortcode-management privileges are required; rendering the stored value executes markup in the affected browser session.

CVSS severity6.1
Medium
EPSS probability0.74%
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 Orchard Core before 1.3.0 allows remote authenticated users to persist browser-executable markup through shortcode settings. The Shortcodes administrator CreatePost and Edit actions stored the Usage field unchanged, and the shortcode picker later treated that value as HTML. Shortcode-management privileges are required; rendering the stored value executes markup in the affected browser session.

The record

CVE
CVE-2022-0820
Published
Mar 10, 2022
Updated
Aug 2, 2024
Vendor
Orchard Core
Product
Orchard Core
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Orchard Core · Orchard Coreversion=unspecified <1.3.0

Published CVSS scores

4.7huntr.devCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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