CVE-2026-34365
InvoiceShelf: SSRF in Estimate PDF Rendering via Unsanitised HTML in Notes Field
Description
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.2.0, a Server-Side Request Forgery (SSRF) vulnerability exists in the Estimate PDF generation module. User-supplied HTML in the estimate Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. The vulnerability is exploitable directly via the PDF preview and customer view endpoints regardless of whether automated email attachments are enabled. This issue has been patched in version 2.2.0.
INFO
Published Date :
March 31, 2026, 8:16 p.m.
Last Modified :
April 7, 2026, 3:53 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update InvoiceShelf to version 2.2.0.
- Verify the patch addresses the SSRF vulnerability.
- Sanitize all user-supplied HTML input.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34365.
| URL | Resource |
|---|---|
| https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.2.0 | Product |
| https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq | Exploit Vendor Advisory |
| https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34365 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34365
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34365 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34365 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 07, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Added CPE Configuration OR *cpe:2.3:a:invoiceshelf:invoiceshelf:*:*:*:*:*:*:*:* versions up to (excluding) 2.2.0 Added Reference Type GitHub, Inc.: https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.2.0 Types: Product Added Reference Type GitHub, Inc.: https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq Types: Exploit, Vendor Advisory Added Reference Type CISA-ADP: https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 01, 2026
Action Type Old Value New Value Added Reference https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq -
New CVE Received by [email protected]
Mar. 31, 2026
Action Type Old Value New Value Added Description InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.2.0, a Server-Side Request Forgery (SSRF) vulnerability exists in the Estimate PDF generation module. User-supplied HTML in the estimate Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. The vulnerability is exploitable directly via the PDF preview and customer view endpoints regardless of whether automated email attachments are enabled. This issue has been patched in version 2.2.0. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N Added CWE CWE-918 Added Reference https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.2.0 Added Reference https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq