EUVD-2026-68399
GHSA-gvgq-37w5-4f8q
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable via PDF upload with low privileges; unbounded decompression causes process crash so A:H; no confidentiality or integrity impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
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 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.
AnalysisAI
Memory exhaustion denial of service in @pdfme/pdf-lib before 5.5.10 allows network-accessible attackers with low-privilege PDF upload access to crash Node.js server processes or freeze browser tabs by submitting a crafted PDF embedding a FlateDecode decompression bomb. The DecodeStream.ensureBuffer() method doubles its internal buffer without any upper-bound check, enabling a kilobyte-scale compressed payload to trigger unbounded memory allocation during parsing. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The attacker must be able to supply a crafted PDF to the application - via a file upload form, an API parameter accepting base64-encoded PDF data, or a URL reference to an attacker-controlled PDF. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VA:H) is internally consistent with the description: straightforward network-exploitable availability attack requiring only low privileges, with no confidentiality or integrity impact limiting blast radius to service disruption. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade @pdfme/pdf-lib to version 5.5.10 or later, as confirmed by GitHub Security Advisory GHSA-vrqm-gvq7-rrwh (https://github.com/pdfme/pdfme/security/advisories/GHSA-vrqm-gvq7-rrwh). … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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