# CVE-2026-45741

## Summary

- **CVE ID:** CVE-2026-45741
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N)
- **CWE:** CWE-184, CWE-918
- **Published:** Aug 19, 2026
- **Last Modified:** Aug 19, 2026

## Description

Gotenberg is a Docker-powered stateless API for PDF files. In 8.32.0 and earlier, the IsPublicIP function in pkg/gotenberg/outbound.go does not reject the 2002::/16 6to4 prefix, the 64:ff9b::/96 and 64:ff9b:1::/48 NAT64 prefixes, the fec0::/10 deprecated site-local prefix, Teredo, and other transition prefixes that can embed or route to non-public IPv4 destinations. The addr.Unmap operation only handles IPv4-mapped IPv6 addresses, so a crafted DNS AAAA record can cause the outbound HTTP client to treat an address wrapping an internal destination such as 169.254.169.254 as public. An unauthenticated attacker can use a conversion route with WithDenyPrivateIPs enabled to reach cloud metadata services, and the Chromium URL conversion route can return the internal response as a PDF, potentially exposing cloud credentials. Exploitation requires a deployment whose host routes the relevant IPv6 prefix, such as a dual-stack or NAT64-enabled environment. This issue is fixed in version 8.33.0.

## Affected Products

- gotenberg — gotenberg (< 8.33.0)

## References

- [CNA](https://github.com/gotenberg/gotenberg/security/advisories/GHSA-86m8-88fq-xfxp)
- [CNA](https://github.com/gotenberg/gotenberg/commit/f9a01c9fb308372170ab7fc97b17a118ee8a125c)
- [CNA](https://github.com/gotenberg/gotenberg/releases/tag/v8.33.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.87%
- **EPSS Percentile:** 56.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._