Sprout Invoices – Client Invoicing & Estimates < 20.8.16 — Authenticated (Subscriber+) Insecure Direct Object Reference
CVE-2026-87797Published · Updated Action summary
Affected: <20.8.16Update to 20.8.16 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.3% chance in 30 days17th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Sprout Invoices – Client Invoicing & Estimates sprout-invoices
- Affected< 20.8.16
- Patched in20.8.16
Update to 20.8.16 or newer.
You are affected if you run < 20.8.16. Version 20.8.16 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.
What to do
- Update to version 20.8.16, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Sprout Invoices – Client Invoicing & Estimates to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Usama Arshad.
The Sprout Invoices – Client Invoicing & Estimates plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to 20.8.16. This is due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, 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
- Advisorywordfence.com
Related CVEs
More in Sprout Invoices – Client Invoicing & Estimates
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Insecure Direct Object Reference ≤20.8.17Update to 20.8.18 | CVE-2026-97078 | |
| Medium4.3 | Missing Authorization ≤20.8.13Update to 20.8.14 | CVE-2026-57418 | |
| Medium5.3 | Missing Authorization ≤20.8.10Update to 20.8.11 | CVE-2026-39562 | |
| High7.5 | Authenticated (Author+) Local File Inclusion ≤20.8.9Update to 20.8.10 | CVE-2026-32401 | |
| Medium5.3 | Missing Authorization ≤20.8.8Update to 20.8.9 | CVE-2026-25364 |
- Medium5.3Unauthenticated Insecure Direct Object Reference
≤20.8.17Update to 20.8.18
- Medium4.3Missing Authorization
≤20.8.13Update to 20.8.14
- Medium5.3Missing Authorization
≤20.8.10Update to 20.8.11
- High7.5Authenticated (Author+) Local File Inclusion
≤20.8.9Update to 20.8.10
- Medium5.3Missing Authorization
≤20.8.8Update to 20.8.9
Timeline
CVE published
Severity medium, CVSS 4.3
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.