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TI-2026-49242 Aliases CVE-2026-70469GHSA-56vg-25rp-h2c5

Apache NiFi: Improper Handling of Case Sensitivity for Content-Encoding in HTTP Requests

Priority MEDIUM 40CWE-409Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00622 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache NiFi2.11.0—No fix listedCNA
  • Apache NiFi VendorApache Affected 2.11.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:nifi:2.11.0:*:*:*:*:*:*:*2.11.0VulnerableApache
  • cpe:2.3:a:apache:nifi:2.11.0:*:*:*:*:*:*:* Versions 2.11.0 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-70469
  2. 2026-10-03 Alias added: GHSA-56vg-25rp-h2c5
  3. 2026-11-06 EPSS moved to the 50th–90th percentile

References

Advisory 2

  • TI-2023-17293 Apache NiFi: Potential Code Injection with Database Services using H2 CVSS 3.1HIGH 8.8
  • TI-2020-16549 Uncontrolled resource consumption in Eclipse Jetty CVSS 3.1MEDIUM 5.3
  • TI-2019-07411 Deserialization of untrusted data in Apache Commons Beanutils CVSS 3.1HIGH 7.3
  • TI-2017-11471 Improper input validation in Apache NiFi CVSS 3.0CRITICAL 9.8
  • TI-2018-01212 XML external entity injection in Apache NiFi CVSS 3.0CRITICAL 9.8
  • TI-2021-03489 Deserialization of untrusted data in jackson-databind CVSS 3.1HIGH 8.1
See all 58 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences