Threat landscape
medium

NGINX OSS und NGINX Plus: Schwachstelle ermöglicht Manipulation von Dateien

WID-SEC-2026-0309 · first 05.02.2026 · updated 17.09.2026 · CVSS 7,5

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What it is about

NGINX ist eine Webserver-, Reverse Proxy- und E-Mail-Proxy Software. NGINX Plus ist die kommerzielle Variante von NGINX, einer Webserver-, Reverse Proxy- und E-Mail Proxy Software. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in NGINX und NGINX Plus ausnutzen, um Dateien zu manipulieren.

Under what conditions?

Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.

What can happen in the worst case

An attacker could use the vulnerability to

  • Dateien zu manipulieren

Am I affected?

Affected according to the BSI:

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • RESF Rocky Linux
  • Gentoo Linux
  • NGINX NGINX <1.29.5
  • NGINX NGINX <1.28.2
  • NGINX NGINX Plus <R36 P2
  • NGINX NGINX Plus <R35 P1

and 2 more

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

Update to at least:

  • NGINX NGINX 1.29.5
  • NGINX NGINX 1.28.2
  • NGINX NGINX Plus R36 P2
  • NGINX NGINX Plus R35 P1
  • NGINX NGINX Plus R32 P4

Is the vulnerability already being exploited?

None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.

Information and sources

and 31 more sources in the original advisory

CVE: CVE-2026-1642

Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.

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