BIT-NIFI-2026-54665 Apache NiFi: Missing Validation for Proxy Host Headers

Apache NiFi 0.0.1 through 2.9.0 support building qualified URLs from one of several HTTP request headers that provide an alternative to the standard Host header without validating the values provided. Apache NiFi 1.6.0 introduced a configurable application property to restrict values provided in...

CVE-2026-54665

Apache NiFi (versions 0.0.1–2.9.0) is affected by an input-validation flaw where URL redirection/data references can be influenced by non-standard host headers. NiFi 1.6.0 added a proxy-host header validation mechanism, but validation was not applied to alternative headers (X-ProxyHost, X-Forward...

Security update for python312

This update for python312 fixes the following issues CVE-2026-1502: HTTP client proxy tunnel headers not validated for CR/LF bsc1261969. CVE-2026-4786: Incomplete mitigation of %action expansion for command injection to webbrowser.open bsc1262319. CVE-2026-6019: BaseCookie.jsoutput does not...

CRLF Injection

Overview Affected versions of this package are vulnerable to CRLF Injection via improper validation of HTTP client proxy tunnel headers or host fields. An attacker can inject arbitrary HTTP headers. Remediation A fix was pushed into the master branch but not yet published. References - GitHub...