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CVE-2026-82866— @pdfme/common before 5.5.10 SSRF via Unvalidated URL Fetch

Quick assessment

Affected
pdfme common
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/common before 5.5.10 contains a server-side request forgery vulnerability in the getB64BasePdf function that fetches arbitrary URLs without validation when basePdf is attacker-controlled. Attackers who control the basePdf template field can force server

CVSS 6.8 · Medium
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I. Basic Information for CVE-2026-82866

Vulnerability Information

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Vulnerability Title
@pdfme/common before 5.5.10 SSRF via Unvalidated URL Fetch
Source: CVE Program / CVE List V5
Vulnerability Description
@pdfme/common before 5.5.10 contains a server-side request forgery vulnerability in the getB64BasePdf function that fetches arbitrary URLs without validation when basePdf is attacker-controlled. Attackers who control the basePdf template field can force servers or clients to make requests to internal endpoints, enabling metadata exfiltration, network reconnaissance, and blind request forgery attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
pdfme common 0 ~ 5.5.10 -

II. Public POCs for CVE-2026-82866

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III. Intelligence Information for CVE-2026-82866

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Other References for CVE-2026-82866 (2)

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

CVE-2026-82864 6.5 MEDIUM pdfme pdf-lib before 5.5.10 Denial of Service via Decompression Bomb
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 product: common
Same vendor: pdfme
Same weakness: CWE-918

V. Comments for CVE-2026-82866

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