CVEvulnerability
CVE-2026-70469
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-16
- Last modified
- 2026-09-21
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-409
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.
Affected configurations
• apache nifi 2.11.0
Related
Weakness · CWE (1)
- CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) weakness
References
- https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0 Mailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/09/16/7 Mailing List, Third Party Advisory