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Sprout Invoices – Client Invoicing & Estimates <= 20.8.17 — Unauthenticated Insecure Direct Object Reference

CVE-2026-97078Published · Updated

Action summary

Affected: ≤20.8.17Update to 20.8.18 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-639 Authorization Bypass Through User-Controlled Key
Required access
No account needed
Exploit prediction (EPSS)
0.2% chance in 30 days12th percentile
CISA KEV
Not listed
On this page8

Am I affected?

Sprout Invoices – Client Invoicing & Estimates sprout-invoices

  1. Affected≤ 20.8.17
  2. Patched in20.8.18

Update to 20.8.18 or newer.

You are affected if you run ≤ 20.8.17. Version 20.8.18 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Sprout Invoices – Client Invoicing & Estimates.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 20.8.18, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Sprout Invoices – Client Invoicing & Estimates to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to gueco.

The Sprout Invoices – Client Invoicing & Estimates plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 20.8.17. This is due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to perform an unauthorized action.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Sprout Invoices – Client Invoicing & Estimates

All 13
More vulnerabilities in Sprout Invoices – Client Invoicing & Estimates
SeverityVulnerabilityCVEPublished
Medium4.3Authenticated (Subscriber+) Insecure Direct Object Reference
<20.8.16Update to 20.8.16
CVE-2026-87797
Medium4.3Missing Authorization
≤20.8.13Update to 20.8.14
CVE-2026-57418
Medium5.3Missing Authorization
≤20.8.10Update to 20.8.11
CVE-2026-39562
High7.5Authenticated (Author+) Local File Inclusion
≤20.8.9Update to 20.8.10
CVE-2026-32401
Medium5.3Missing Authorization
≤20.8.8Update to 20.8.9
CVE-2026-25364

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
EPSS
Exploit Prediction Scoring System by FIRST.org.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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