CVE-2026-115729

Description

@pdfme/common from 5.5.10 before 6.2.6 contains a server-side request forgery vulnerability that allows attackers to bypass the isUrlSafeToFetch denylist in getB64BasePdf. Attackers can supply basePdf URLs using IPv4-mapped IPv6, [::], NAT64 or localhost alias hostnames to read loopback, internal or cloud metadata responses through generated documents.

References

• https://github.com/pdfme/pdfme/commit/d03d0bc4994ce6921e152879793c5ff52c5600a6
• https://github.com/pdfme/pdfme/security/advisories/GHSA-2rg9-wxfw-wrr7
• https://github.com/pdfme/pdfme/security/advisories/GHSA-pgx6-7jcq-2qff
• https://www.vulncheck.com/advisories/pdfme-common-5.5.10-before-6.2.6-ssrf-via-isurlsafetofetch-bypass