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Vulnerability record · CVE-2026-70469 · published 16 September 2026

CVE-2026-70469: Apache nifi vulnerability

Apache · Nifi

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.

7.5 CVSS 3.1 High EPSS 0.62% · top 52.3% CWE-409 · CWE-409
7.5CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
21 Sep 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0 Mailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/09/16/7 Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-1309Apache nifi xml external entity (xxe) vulnerabilityApache NiFi External XML Entity issue in SplitXML processor. Malicious XML content could cause information disclosure or remote code execution. The f…EPSS 4.5%9.8CVE-2017-15697Apache nifi improper input validation vulnerabilityA malicious X-ProxyContextPath or X-Forwarded-Context header containing external resources or embedded code could cause remote code execution. The fi…EPSS 4.8%9.8CVE-2017-5636Apache nifi injection vulnerabilityIn Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injectio…EPSS 3.6%8.8CVE-2026-68981Apache nifi vulnerabilityApache NiFi 1.5.0 through 2.10.0 support gzip-encoded HTTP requests for the application REST API using a Jersey encoding filter. The framework enforc…EPSS 0.74%8.8CVE-2023-36542Apache nifi code injection vulnerabilityApache NiFi 0.0.2 through 1.22.0 include Processors and Controller Services that support HTTP URL references for retrieving drivers, which allows an …EPSS 1.9%8.8CVE-2023-34468Apache NiFi DBCP/HikariCP connection pool H2 JDBC code injectionThe DBCPConnectionPool and HikariCPConnectionPool Controller Services in Apache NiFi 0.0.2 through 1.21.0 allow an authenticated and authorized user …EPSS 62%analysed8.8CVE-2022-33140Apache nifi os command injection vulnerabilityThe optional ShellUserGroupProvider in Apache NiFi 1.10.0 to 1.16.2 and Apache NiFi Registry 0.6.0 to 1.16.2 does not neutralize arguments for group …EPSS 3.7%8.8CVE-2019-12421Apache nifi insufficient session expiration vulnerabilityWhen using an authentication mechanism other than PKI, when the user clicks Log Out in NiFi versions 1.0.0 to 1.9.2, NiFi invalidates the authenticat…EPSS 1.8%

Source: NIST National Vulnerability Database (record CVE-2026-70469), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.