{"id":"CVE-2026-82864","title":"pdfme pdf-lib versions before 5.5.10 contain an unbounded buffer growth vulnerability in the DecodeStream.ensureBuffer() method that allows attackers to cause denial of service by supplying a crafted PDF with a FlateDecode stream contain…","summary":"pdfme pdf-lib versions before 5.5.10 contain an unbounded buffer growth vulnerability in the DecodeStream.ensureBuffer() method that allows attackers to cause denial of service by supplying a crafted PDF with a FlateDecode stream contain…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-409"],"vendor":"pdfme","product":"pdf-lib","affected":["pdf-lib < 5.5.10"],"published":"2026-08-31","updated":"2026-10-08","sourceUpdated":"2026-10-08T16:17:53.423","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82864","references":[{"url":"https://github.com/pdfme/pdfme/security/advisories/GHSA-vrqm-gvq7-rrwh","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pdfme-pdf-lib-before-5.5.10-denial-of-service-via-decompression-bomb","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-31T16:23:10.297868Z"},"epss":0.00436,"epssPercentile":0.3766,"ingestedAt":"2026-09-10T16:57:28.695Z","slug":"CVE-2026-82864","body":"## Overview\n\npdfme pdf-lib versions before 5.5.10 contain an unbounded buffer growth vulnerability in the DecodeStream.ensureBuffer() method that allows attackers to cause denial of service by supplying a crafted PDF with a FlateDecode stream containing a decompression bomb. Attackers can upload a small compressed PDF that decompresses to hundreds of megabytes, exhausting memory and crashing the Node.js process or freezing browser tabs during PDF parsing.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}