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  4. CVE 2026 70469 apache nifi improper handling of case sensitivity
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Back to active CVEs
High · CVSS 7.5CVE-2026-70469

Apache NiFi: Improper Handling of Case Sensitivity for Content-Encoding in HTTP RequestsCVE-2026-70469

Answer in brief

CVE-2026-70469 records a High severity (CVSS 7.5) vulnerability in Apache NiFi: Improper Handling of Case Sensitivity for Content-Encoding in HTTP Requests. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache NiFi (generic), Apache Software Foundation/org.apache.nifi:nifi-jetty (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 21, 2026Source checked Nov 1, 2026First seen by HOL Sep 16, 2026Material review Sep 21, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache NiFi (generic), Apache Software Foundation/org.apache.nifi:nifi-jetty (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:apache:nifi:2.11.0:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/Apache NiFigeneric2.11.0Not reported
Apache Software Foundation/org.apache.nifi:nifi-jettygeneric2.11.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache NiFi, Apache Software Foundation/org.apache.nifi:nifi-jetty.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 16, 2026

Sources and claim methodology

  • Source referencelists.apache.org
  • Source referenceopenwall.com
Upstream source description

Apache NiFi 2.11.0 disabled support for gzip-encoded HTTP requests for the application REST API and rejected requests that included the standard Content-Encoding header indicating gzip encoding. The framework enforcement filter did not check multiple instances of the Content-Encoding header and did not reject non-standard identifiers for gzip encoding, allowing a malicious client to send crafted requests that could consume excessive amounts of memory. Upgrading to Apache NiFi 2.12.0 is the recommended mitigation, which disables decompression of gzip-encoded HTTP requests regardless of header number or encoding identifiers.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-409
Source
CVE List V5
Source checked
Nov 1, 2026
References
2 linked sources
Open source record