UpHeron
All vulnerabilities

Servers and applications

CVE-2023-25725

HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3,…

Severity
Critical 9.1
Published
14 Feb 2023
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
2.0.31, 2.2.29, 2.4.22, 2.5.12, 2.6.9, 2.7.3
Sources
NVD

Affected software

SoftwareAffected versions
HAProxyServers and applications · cpe:a:haproxy:haproxy
  • Every version before 2.0.31
  • From 2.1.0 before 2.2.29
  • From 2.3.0 before 2.4.22
  • From 2.5.0 before 2.5.12
  • From 2.6.0 before 2.6.9
  • From 2.7.0 before 2.7.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-25725
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-25725