CVE-2026-34366 describes a Server-Side Request Forgery (SSRF) vulnerability in InvoiceShelf versions prior to 2.2.0, where unsanitized user-supplied HTML in the payment Notes field allows the Dompdf rendering library to fetch remote resources. This vulnerability is rated High with a CVSS score of 7.6, requiring high privileges but having low attack complexity, enabling a network-based attacker to achieve high confidentiality impact by potentially accessing sensitive internal network data. Currently, there is no evidence of active exploitation, no public exploit code available, and it is not listed in CISA's KEV catalog, though it has received minimal community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.2.0CPE matchmatch criteria | cpe:2.3:a:invoiceshelf:invoiceshelf:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.