Client Invoicing by Sprout Invoices <= 19.9.6 — Authenticated Stored Cross-Site Scripting
CVE-2021-24787Published · Updated Action summary
Affected: <19.9.7Update to 19.9.7 or newer
All remediation steps- Severity
- Medium4.8
- CVSS
- 4.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Sprout Invoices – Client Invoicing & Estimates sprout-invoices
- Affected< 19.9.7
- Patched in19.9.7
Update to 19.9.7 or newer.
You are affected if you run < 19.9.7. Version 19.9.7 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 19.9.7, 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 Dipak Panchal (th3.d1p4k).
The Client Invoicing by Sprout Invoices plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 5.5 due to the plugin not sanitising and escaping some of its settings. This makes it possible for high privilege users to inject arbitrary web scripts in pages to perform attacks even when the unfiltered_html capability is disallowed.
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 | Authenticated (Subscriber+) Insecure Direct Object Reference <20.8.16Update to 20.8.16 | CVE-2026-87797 | |
| 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 |
- Medium5.3Unauthenticated Insecure Direct Object Reference
≤20.8.17Update to 20.8.18
- Medium4.3Authenticated (Subscriber+) Insecure Direct Object Reference
<20.8.16Update to 20.8.16
- 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
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.8
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.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.