NGINX ngx_http_core_module vulnerability
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module. When asynchronous file I/O (AIO) is enabled in certain configurations, processing a Server Side Includes (SSI) page containing “include virtual” commands may trigger a Use-After-Free (UAF) in the NGINX worker process. This may cause memory corruption or a worker process crash. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system, corrupt its memory, or possibly trigger code execution. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
CVE-2026-97205
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-97205
NGINX Plus
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
NGINX Open Source
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "F5",
"modules": [
"ngx_http_core_module"
],
"product": "NGINX Plus",
"versions": [
{
"status": "affected",
"version": "37.1.0",
"lessThan": "37.1.0.1",
"versionType": "custom"
},
{
"status": "affected",
"version": "37.0.0",
"lessThan": "37.0.5.1",
"versionType": "custom"
},
{
"status": "affected",
"version": "R36",
"lessThan": "*",
"versionType": "custom"
},
{
"status": "affected",
"version": "R35",
"lessThan": "*",
"versionType": "custom"
},
{
"status": "affected",
"version": "R34",
"lessThan": "*",
"versionType": "custom"
},
{
"status": "affected",
"version": "R33",
"lessThan": "*",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "F5",
"modules": [
"ngx_http_core_module"
],
"product": "NGINX Open Source",
"versions": [
{
"status": "affected",
"version": "1.31.0",
"lessThan": "1.31.7",
"versionType": "custom"
},
{
"status": "affected",
"version": "1.30.0",
"lessThan": "1.30.6",
"versionType": "custom"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-97205
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #28666 · Revision 1
- Added to Heist Feed
- Publisher date