Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-82864— pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb

Quick assessment

Affected
pdfme pdf-lib
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PDFME是pdfme组织开源的一个使用TypeScript和React构建的开源PDF生成库。 PDFME 5.5.10之前版本存在资源管理错误漏洞，该漏洞源于DecodeStream.ensureBuffer()方法存在无界缓冲区增长，可能导致攻击者通过提供带有FlateDecode解压炸弹的特制PDF造成拒绝服务。

CVSS 6.5 · Medium EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1480 · Execution Guardrails

Affected Version Matrix 2

VendorProduct Version RangeStatus
pdfme pdf-lib < 5.5.10 affected
5.5.10 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-82864

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
PDFME 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PDFME是pdfme组织开源的一个使用TypeScript和React构建的开源PDF生成库。 PDFME 5.5.10之前版本存在资源管理错误漏洞，该漏洞源于DecodeStream.ensureBuffer()方法存在无界缓冲区增长，可能导致攻击者通过提供带有FlateDecode解压炸弹的特制PDF造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pdfme pdf-lib 0 ~ 5.5.10 -

II. Public POCs for CVE-2026-82864

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-82864

请登录查看更多情报信息。

Other References for CVE-2026-82864 (2)

Same Patch Batch · pdfme · 2026-08-31 · 5 CVEs total

CVE-2026-82866 6.8 MEDIUM @pdfme/common before 5.5.10 SSRF via Unvalidated URL Fetch
CVE-2026-82867 6.1 MEDIUM @pdfme/schemas before 5.5.9 Cross-Site Scripting via Select
CVE-2026-82868 6.1 MEDIUM @pdfme/schemas before 5.5.9 Cross-Site Scripting via SVG
CVE-2026-82865 4.4 MEDIUM pdfme schemas before 5.5.10 Cross-Site Scripting via i18n Label

IV. Related Vulnerabilities

Same vendor: pdfme
Same weakness: CWE-409

V. Comments for CVE-2026-82864

No comments yet

Leave a comment