UpHeron
All vulnerabilities

Servers and applications

CVE-2019-18678

An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and…

Severity
Medium 5.3
Published
26 Nov 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
6.2% in the next 30 daysHigher than 93% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
SquidServers and applications · cpe:a:squid-cache:squid
  • From 3.0 up to 3.5.28
  • From 4.0 up to 4.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-18678
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-18678