UpHeron
All vulnerabilities

Servers and applications

CVE-2019-15892

An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1. An HTTP/1 parsing failure allows a remote attacker to trigger an assert by sending crafted HTTP/1 requests. The assert will cause an automatic restart with a clean cache, which makes it a Denial of Service attack.

Severity
High 7.5
Published
3 Sept 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
6.0.4, 6.2.1
Exploit chance
5.9% in the next 30 daysHigher than 93% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Varnish CacheServers and applications · cpe:a:varnish-software:varnish_cache
  • From 6.0.0 before 6.0.4
Varnish CacheServers and applications · cpe:a:varnish_cache_project:varnish_cache
  • From 6.1.0 up to 6.1.1
  • From 6.2.0 before 6.2.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-15892
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-15892