CVE-2021-35210: Cross site scripting in the system log

CVE-2021-35210 · Severity: low · CVSS 3.1 · Published 2021-07-01

Cross site scripting in the system log

Technologies: contao/contao (Packagist), contao/core-bundle (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2021-35210 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-35210 being exploited in the wild.
How severe is CVE-2021-35210?
Low severity, with a CVSS score of 3.1, published 1 July 2021.
Which products and versions are affected?
contao/contao (Packagist) ECOSYSTEM:introduced=4.5.0,fixed=4.9.16; contao/core-bundle (Packagist) ECOSYSTEM:introduced=4.5.0,fixed=4.9.16.
Is there a fix for CVE-2021-35210?
Yes. contao/contao (Packagist): upgrade to 4.9.16 or later; contao/core-bundle (Packagist): upgrade to 4.9.16 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-35210?
Check whether you run contao/contao (Packagist) or contao/core-bundle (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

  • contao/contao (Packagist): upgrade to 4.9.16 or later
    composer require contao/contao:^4.9.16
  • contao/core-bundle (Packagist): upgrade to 4.9.16 or later
    composer require contao/core-bundle:^4.9.16

Affected products

  • contao/contao (Packagist) ECOSYSTEM:introduced=4.5.0,fixed=4.9.16
  • contao/core-bundle (Packagist) ECOSYSTEM:introduced=4.5.0,fixed=4.9.16

Identifiers

  • CVE-2021-35210
  • GHSA-h58v-c6rf-g9f7

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