Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') The advisory has been revoked - it doesn't affect any version of package gitlab-rails-ce-18.6 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-GITLABRAILSCE186-14186025
- published5 Dec 2025
- disclosed20 Dec 2019
Introduced: 20 Dec 2019
CVE-2019-19919 (opens in a new tab)Amendment
The Chainguard security team deemed this advisory irrelevant for Chainguard:latest.
NVD Description
Note: Versions mentioned in the description apply only to the upstream gitlab-rails-ce-18.6 package and not the gitlab-rails-ce-18.6 package as distributed by Chainguard.
Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's proto and defineGetter properties, which may allow an attacker to execute arbitrary code through crafted payloads.