CVE-2026-45741
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 56% of all known CVEs.
References
Related Vulnerabilities
Other CWE-184 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-5217 | Critical | 9.8 | 100% | KEV | - |
| CVE-2022-43396 | High | 8.8 | 55% | - | Fix |
| CVE-2017-7525 | Critical | 9.8 | 38% | - | Fix |
| CVE-2024-5178 | Medium | 4.9 | 34% | - | - |
| CVE-2018-7489 | Critical | 9.8 | 20% | - | Fix |
| CVE-2018-6383 | High | 8.8 | 13% | - | - |
Common questions
How do I fix CVE-2026-45741?
No published fix for CVE-2026-45741 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-45741 being actively exploited?
Not that we know of. CVE-2026-45741 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.87% is the estimated probability that it will be exploited in the next 30 days. That is higher than 56% of all scored CVEs.
How severe is CVE-2026-45741?
CVE-2026-45741 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-19.