Is CVE-2026-48142 actively exploited?

No active exploitation of CVE-2026-48142 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-48142 be exploited remotely?

Yes. CVE-2026-48142 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-48142?

CVE-2026-48142 has a CVSS score of 4.8 (MEDIUM).

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MEDIUM

CVE-2026-48142

CWE-125Published: June 17, 2026· Updated: Jun 22, 2026

4.8

CVSS v3.1

Official Description

NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a charset directive (for example, charset koi8-r;) configured, remote, unauthenticated attackers can send requests (in conjunction with conditions beyond their 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.

NVD Source

Technical Analysis

CVE-2026-48142 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.