Vulnerability · Published May 7, 2026 · Assigned by GitHub_M

CVE-2026-41653BentoPDF: Stored XSS via Markdown Editor Leading to Persistent File Exfiltration

High 7.0

In plain English

A high-severity cross-site scripting in bentopdf from alam00000. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 4.0)7.0High

Exploit odds (30 days)0.4%top 70.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

Official description

BentoPDF is a client-side PDF toolkit that is self hostable. Prior to version 2.8.3, a cross-site scripting vulnerability was identified in BentoPD. An attacker may be able to execute arbitrary JavaScript in certain circumstances in Markdown to PDF Tool. This issue has been patched in version 2.8.3.

Affected products (as reported)

Vendor	Product	Versions
alam00000	bentopdf	< 2.8.3

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

References

https://github.com/alam00000/bentopdf/security/advisories/GHSA-6vh8-4frx-647f x_refsource_CONFIRM
https://github.com/alam00000/bentopdf/releases/tag/v2.8.3 x_refsource_MISC