<?xml version='1.0' encoding='UTF-8'?>
<?xml-stylesheet href="/static/style.xsl" type="text/xsl"?>
<rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/" version="2.0">
  <channel>
    <title>Most recent entries from all</title>
    <link>https://db.gcve.eu</link>
    <description>Contains only the most 10 recent entries.</description>
    <docs>http://www.rssboard.org/rss-specification</docs>
    <generator>python-feedgen</generator>
    <language>en</language>
    <lastBuildDate>Sun, 04 Oct 2026 03:36:18 +0000</lastBuildDate>
    <item>
      <title>CVE-2026-54338 — JupyterHub: Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login</title>
      <link>https://db.gcve.eu/vuln/cve-2026-54338</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jupyterhub&lt;/p&gt;
&lt;p&gt;JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and storage resources. This issue is fixed in version 5.5.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jupyterhub&lt;/p&gt;
&lt;p&gt;JupyterHub is software that allows users to create a multi-user server for Jupyter notebooks. Prior to 5.5.0, invalid input to form-based login authenticators can place an unbounded attacker-controlled username in failed-login logs, allowing an unauthenticated attacker to consume logging and storage resources. This issue is fixed in version 5.5.0.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/cve-2026-54338</guid>
    </item>
    <item>
      <title>PYSEC-2026-3853 — JupyterHub has Unauthenticated Denial of Service via Unbounded Username Logging on Failed Login</title>
      <link>https://db.gcve.eu/vuln/pysec-2026-3853</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: jupyterhub&lt;/p&gt;
&lt;p&gt;### Impact&lt;/p&gt;
&lt;p&gt;Invalid input to login resulted in unbounded logging output. Only form-based Authenticators (the default PAM Authenticator, but not the more widely used OAuthenticator) are affected.&lt;/p&gt;
&lt;p&gt;### Patches&lt;/p&gt;
&lt;p&gt;Upgrade to 5.5.0.&lt;/p&gt;
&lt;p&gt;### Workarounds&lt;/p&gt;
&lt;p&gt;Use an Authenticator that doesn&amp;#39;t use a login form, such as OAuthenticator.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: jupyterhub&lt;/p&gt;
&lt;p&gt;### Impact&lt;/p&gt;
&lt;p&gt;Invalid input to login resulted in unbounded logging output. Only form-based Authenticators (the default PAM Authenticator, but not the more widely used OAuthenticator) are affected.&lt;/p&gt;
&lt;p&gt;### Patches&lt;/p&gt;
&lt;p&gt;Upgrade to 5.5.0.&lt;/p&gt;
&lt;p&gt;### Workarounds&lt;/p&gt;
&lt;p&gt;Use an Authenticator that doesn&amp;#39;t use a login form, such as OAuthenticator.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://db.gcve.eu/vuln/pysec-2026-3853</guid>
    </item>
  </channel>
</rss>
