Nginx Open Source vulnerabilitiesRanked by how likely they are to be used.

Product496 versions
The short answer

Nginx Open Source is made by F5. We track 8 published vulnerabilities in it, across 496 versions. None of them is on the list of flaws known to be exploited today. If you run Nginx Open Source, keep it on a version the vendor still supports.

See the riskiest flaws

We keep watching the known-exploited list.

Known exploited

Which Nginx Open Source vulnerabilities are being exploited?

This is the list that matters most: flaws criminals are using now.

None of Nginx Open Source's published vulnerabilities is on the list of flaws known to be exploited today. We keep watching that list.

Exploit likelihood

Which Nginx Open Source flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. 1.1%

    When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module, undisclosed requests can cause NGINX worker processes to terminate.

    CVSS7.5Published14 Feb 2024
  2. 0.9%

    When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module, undisclosed HTTP/3 requests can cause NGINX worker processes to terminate.

    CVSS5.3Published29 May 2024
  3. 0.9%

    When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module, undisclosed requests can cause NGINX worker processes to terminate.

    CVSS7.5Published14 Feb 2024
  4. 0.9%

    When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module, undisclosed HTTP/3 requests can cause NGINX worker processes to terminate or cause other potential impact.

    CVSS4.8Published29 May 2024
  5. 0.9%

    When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module and the network infrastructure supports a Maximum Transmission Unit (MTU) of 4096 or greater without fragmentation, undisclosed QUIC packets...

    CVSS5.3Published29 May 2024
  6. 0.9%

    When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module, undisclosed HTTP/3 encoder instructions can cause NGINX worker processes to terminate or cause or other potential impact.

    CVSS6.5Published29 May 2024
  7. 0.4%

    NGINX Open Source and NGINX Plus have a vulnerability in the ngx_mail_smtp_module that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the server side may...

    CVSS3.7Published13 Aug 2025
  8. 0.3%

    NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_mp4_module, which might allow an attacker to over-read NGINX worker memory resulting in its termination, using a specially crafted mp4 file.

    CVSS5.7Published14 Aug 2024
Precursor Intelligence

Running Nginx Open Source? We'll keep checking.

Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.

  1. Tell us what you runPick your software from a list, or let us work it out from your website.
  2. We match it to every flawOver 400,000 published flaws, checked against your list.
  3. Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
  4. Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.

Free plan, no card needed. Nothing to install.

FAQ

Common questions, answered plainly.

Something else? Talk to the team →

We track 8 published vulnerabilities listed under the name Nginx Open Source, across 496 versions.

None of Nginx Open Source's vulnerabilities is on the list of flaws known to be exploited today.

Create a Precursor Intelligence account and track Nginx Open Source. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.