CVE-2019-11921
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 2.1%
exploitation probability
2.1%top 19% of all CVEs
observed exploitation
nono source reports it
An out of bounds write is possible via a specially crafted packet in certain configurations of Proxygen due to improper handling of Base64 when parsing malformed binary content in Structured HTTP Headers. This issue affects versions of proxygen prior to v2019.07.22.00.
Affected products
Facebook · Proxygen