ol-10.9.0.tgz: 1 vulnerabilities (highest severity is: 7.5)

[mend-bolt-for-github]

Vulnerable Library - ol-10.9.0.tgz

Sample Path to Dependency File: /package.json

Path to vulnerable library: /home/wss-scanner/.yarn/berry/cache/fflate-npm-0.8.2-5129f303f0-10c0.zip

Found in HEAD commit: da0c9c84fdbc82b3b8e2221482a86225136e26be

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (ol version)	Remediation Possible**
CVE-2026-45820	High	7.5	fflate-0.8.2.tgz	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2026-45820

Vulnerable Library - fflate-0.8.2.tgz

Library home page: https://registry.npmjs.org/fflate/-/fflate-0.8.2.tgz

Sample Path to Dependency File: /package.json

Path to vulnerable library: /home/wss-scanner/.yarn/berry/cache/fflate-npm-0.8.2-5129f303f0-10c0.zip

Dependency Hierarchy:

• ol-10.9.0.tgz (Root Library)
  • zarrita-0.7.2.tgz
    • numcodecs-0.3.2.tgz
      • ❌ fflate-0.8.2.tgz (Vulnerable Library)

Found in HEAD commit: da0c9c84fdbc82b3b8e2221482a86225136e26be

Found in base branch: main

Vulnerability Details

fflate through 0.8.2 is vulnerable to denial of service via an infinite loop in unzipSync(). A crafted ZIP archive with a central directory entry declaring compressed_size=0xFFFFFFFF (ZIP64 sentinel) but missing the required ZIP64 extra field tag 0x0001 causes z64e() to loop indefinitely due to out-of-bounds reads returning undefined, which coerces to 0, keeping the loop condition permanently true.

Publish Date: 2026-07-22

URL: CVE-2026-45820

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-07-22

Fix Resolution: fflate - 0.8.3

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