CVE-2018-20583: PHP League CommonMark vulnerable to Cross-Site Scripting (XSS)

CVE-2018-20583 · Severity: low · CVSS 3 · Published 2022-05-14

PHP League CommonMark vulnerable to Cross-Site Scripting (XSS)

Technologies: league/commonmark (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2018-20583 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2018-20583 being exploited in the wild.
How severe is CVE-2018-20583?
Low severity, with a CVSS score of 3, published 14 May 2022.
Which products and versions are affected?
league/commonmark (Packagist) ECOSYSTEM:introduced=0.15.6,fixed=0.18.1.
Is there a fix for CVE-2018-20583?
Yes. league/commonmark (Packagist): upgrade to 0.18.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2018-20583?
Check whether you run league/commonmark (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • league/commonmark (Packagist): upgrade to 0.18.1 or later
    composer require league/commonmark:^0.18.1

Affected products

  • league/commonmark (Packagist) ECOSYSTEM:introduced=0.15.6,fixed=0.18.1

Identifiers

  • CVE-2018-20583
  • GHSA-qx76-c53f-5c7q

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