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osvGoogleOSV:CVE-2021-36740
HistoryJul 14, 2021 - 5:15 p.m.

CVE-2021-36740

2021-07-1417:15:08
Google
osv.dev
11
varnish cache
http/2
request smuggling
vcl authorization bypass
content-length header
post request
varnish enterprise
varnish cache 5.x
varnish cache 6.x
varnish 6.0.x
cve-2021-36740
security vulnerability

AI Score

6.7

Confidence

Low

EPSS

0.007

Percentile

79.9%

Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.