CVE-2023-51517Network attack vector

Visitor redirection via unsanitized shortcode attributes

Published Dec 29, 2023 · Updated Apr 28, 2026

Open redirect in CodePeople Calculated Fields Form 1.2.28 and earlier allows remote authenticated users to redirect site visitors. Shortcode rendering fails to sanitize and escape user-supplied attributes before using them as redirect destinations. Contributor-level access is required to inject the shortcode, and a visitor must open the resulting page before the browser is redirected.

CVSS severity4.1
Medium
EPSS probability0.29%
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 CodePeople Calculated Fields Form 1.2.28 and earlier allows remote authenticated users to redirect site visitors. Shortcode rendering fails to sanitize and escape user-supplied attributes before using them as redirect destinations. Contributor-level access is required to inject the shortcode, and a visitor must open the resulting page before the browser is redirected.

The record

CVE
CVE-2023-51517
Published
Dec 29, 2023
Updated
Apr 28, 2026
Vendor
CodePeople
Product
Calculated Fields Form
Classifications
CWE-601, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=1.2.28 changes=[{"at":"1.2.29","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CodePeople · Calculated Fields Formversion=n/a <=1.2.28 changes=[{"at":"1.2.29","status":"unaffected"}]

Published CVSS scores

4.1PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1189Drive-by Compromise

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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