Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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 applicationsUpgrade yaml
to version 2.2.2, 2.3.0-5 or higher.
Affected versions of this package are vulnerable to Uncaught Exception due to improper validation of the input passed to the functions parseDocument
and parseAllDocuments
.
Exploiting this vulnerability is possible when these functions are fed an invalid input with more than 80 carriage return characters (\r
).
const yaml = require("yaml");
const string = "[" + "\r".repeat(80);
yaml.parseDocument(string);