CVE-2026-42934

MediumCVSS 4.8/10Last modified Oct 26, 2026

Description

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives are configured, unauthenticated attackers can send requests that with conditions beyond the attackers' control to cause a heap buffer over-read in the NGINX worker process, leading to limited disclosure of memory or a restart.

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

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
F5	NGINX Plus	>= R36, < R36 P4; >= R32, < R32 P6
F5	NGINX Open Source	>= 0.3.50, < 1.30.1

References

https://my.f5.com/manage/s/article/K000161028Mitigation, Vendor Advisory

Timeline

Published: May 13, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-429368.4The installer of HYPER SBI 2 insecurely loads Dynamic Link Libraries. If there is a crafted DLL at the same directory when invoking the affe CVE-2026-429376.5Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, and in BIG-IP iControl RE CVE-2026-429418.3The Danelec MacGregor Voyage Data Recorder device includes a default username and password, with no enforced password change.CVE-2026-429447.5NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap overflow when encoding multiple NSID a CVE-2026-429458.1NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite dire CVE-2026-429467.4A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an ov CVE-2026-429478.8A flaw in Naxclow's platform’s onboarding workflow allows an attacker to replay a confirm-then-bind sequence to silently reassign a device t CVE-2026-429484.8Stored cross-site scripting vulnerability exists in ELECOM wireless LAN access point devices. If one of the administrators input malicious d CVE-2026-429495.6A authorization bypass vulnerability exists in the /api/runscript functionality of FUXA (version(s): 1.3.2-2809). A specially crafted HTTP r CVE-2026-42957.8Improper trust boundary enforcement in Kiro IDE before version 0.8.0 on all supported platforms might allow a remote unauthenticated threat CVE-2026-429505.1ELECOM wireless LAN access point devices do not check if language parameter has an appropriate value. If a user views a malicious page while CVE-2026-429515.4An authenticated user can download a backup of the Danelec MacGregor Voyage Data Recorder device which includes account data and password