VDB
RHSA-2026:20442
RHSA-2026:20442
PUBLISHED
CVSS 8.100000381469727 HIGH
A flaw was found in NGINX, specifically within the ngx_http_rewrite_module. An unauthenticated attacker can exploit this vulnerability by sending crafted HTTP requests under specific rewrite configurations. This can lead to a heap buffer overflow in the NGINX worker process, which may result in arbitrary code execution if Address Space Layout Randomization (ASLR), a security technique to prevent exploitation, is disabled. Otherwise, this flaw causes a denial of service due to a restart of the NGINX worker process.
Risk Scores
CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | registry.redhat.io/satellite/iop-gateway-rhel9@sha256:8337f2385786f2022f7828a28b0e85db5145ecf59eb401d251e6ca265b6c4e64_amd64 as a component of Red Hat Satellite 6.18 | * |
Timeline
- May 25, 2026 CVE Published
- Jun 23, 2026 CVE Updated
- Jun 23, 2026 Distribution Patch
- Jun 23, 2026 Distribution Patch
- Jun 23, 2026 Security Advisory
- Jun 23, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:20442 advisory
- https://access.redhat.com/documentation/en-us/red_hat_satellite/6.18/html/updating_red_hat_satellite/index advisory
- https://access.redhat.com/security/cve/CVE-2026-42945 advisory
- https://access.redhat.com/security/updates/classification/ advisory
- https://catalog.redhat.com/software/containers/search advisory
- https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/installing_satellite_server_in_a_connected_network_environment/performing-additional-configuration-on-server_satellite#installing-and-configuring-red-hat-lightspeed-in-satellite advisory
- https://docs.redhat.com/en/documentation/red_hat_satellite/6.18/html/installing_satellite_server_in_a_disconnected_network_environment/performing-additional-configuration#installing-and-configuring-red-hat-lightspeed-in-satellite advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_20442.json advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2477116 issue
- https://www.cve.org/CVERecord?id=CVE-2026-42945 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-42945 advisory
- https://depthfirst.com/nginx-rift advisory
- https://my.f5.com/manage/s/article/K000161019 advisory