Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-87117.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-87117
Upstream
Published
2026-05-19T15:16:33Z
Modified
2026-08-30T05:26:50Z
Summary
CVE-2026-8711 affecting package nginx for versions less than 1.28.3-4
Details

NGINX JavaScript has a vulnerability when the jsfetchproxy directive is configured with at least one client-controlled NGINX variable (for example, $http_*, $arg_*, $cookie_*) and a location invoking the ngx.fetch() operation from NGINX JavaScript. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References

Affected packages

Azure Linux:3 / nginx

Package

Name
nginx
Purl
pkg:rpm/azure-linux/nginx

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.28.3-4

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-87117.json"