AI Score
Confidence
High
EPSS
Percentile
47.2%
SSVC
Exploitation
none
Automatable
no
Technical Impact
partial
A use after free vulnerability exists in curl <7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
[
{
"vendor": "n/a",
"product": "https://github.com/curl/curl",
"versions": [
{
"status": "affected",
"version": "Fixed in curl 7.87.0"
}
]
}
]