CVE detail
CVE-2026-42934
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 16.1 · diversity 16.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
4 source links · newest first
Information published.
vendormsrc.microsoft.comMay 16, 2026, 8:04 AMResearchers have found a critical vulnerability in the widely used Nginx web server that can potentially lead to remote code execution under certain conditions. The flaw is a heap buffer overflow that has gone undetected in the program’s code for the past 18 years. Tracked as CVE-2026-42945, the vulnerability is one of 4 bugs found […]
newswww.csoonline.comMay 14, 2026, 11:06 PM- NGINX Rift: an 18-year-old flaw in the world’s most deployed web server just came to lightSecurity Affairs
Researchers found a critical 18-year-old buffer overflow flaw in NGINX, tracked as CVE-2026-42945 and named NGINX Rift. If you run NGINX, and statistically speaking, there is a very good chance you do, this week brought news worth stopping for. Security researchers at depthfirst disclosed a critical heap buffer overflow vulnerability in both NGINX Plus and […]
newssecurityaffairs.comMay 14, 2026, 1:30 PM No excerpt available.
Vendor Advisorymy.f5.comMay 13, 2026, 4:16 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
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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 ut…
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