https://cve.radiocsirt.org Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Sun, 04 Oct 2026 16:04:59 +0000 https://cve.radiocsirt.org/vuln/euvd-2026-290864 EUVD-2026-290864 https://cve.radiocsirt.org/vuln/euvd-2026-290864 https://cve.radiocsirt.org/vuln/fkie_cve-2026-40396 <p>Varnish Cache 9 before 9.0.1 allows a &#34;workspace overflow&#34; denial of service (daemon panic) after timeout_linger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread (timeout_linger) and resume traffic before the session is closed (timeout_idle) sending more than one request at once to trigger a pipelining operation between requests. This vulnerability affecting Varnish Cache 9.0.0 emerged from a port of the Varnish Enterprise non-blocking architecture for HTTP/2. New code was needed to adapt to a more recent workspace API that formalizes the pipelining operation. In addition to the workspace change on the Varnish Cache side, other differences created merge conflicts, like partial support for trailers in Varnish Enterprise. The conflict resolution missed one code path configuring pipelining to perform a complete workspace rollback, losing the guarantee that prefetched data would fit inside workspace_client during the transition from one request to the next. This can result in a workspace overflow, triggering a panic and crashing the Varnish server.</p> <p>Varnish Cache 9 before 9.0.1 allows a &#34;workspace overflow&#34; denial of service (daemon panic) after timeout_linger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread (timeout_linger) and resume traffic before the session is closed (timeout_idle) sending more than one request at once to trigger a pipelining operation between requests. This vulnerability affecting Varnish Cache 9.0.0 emerged from a port of the Varnish Enterprise non-blocking architecture for HTTP/2. New code was needed to adapt to a more recent workspace API that formalizes the pipelining operation. In addition to the workspace change on the Varnish Cache side, other differences created merge conflicts, like partial support for trailers in Varnish Enterprise. The conflict resolution missed one code path configuring pipelining to perform a complete workspace rollback, losing the guarantee that prefetched data would fit inside workspace_client during the transition from one request to the next. This can result in a workspace overflow, triggering a panic and crashing the Varnish server.</p> https://cve.radiocsirt.org/vuln/fkie_cve-2026-40396 https://cve.radiocsirt.org/vuln/ghsa-5pmq-jgg5-3j6q <p>Varnish Cache 9 before 9.0.1 allows a &#34;workspace overflow&#34; denial of service (daemon panic) after timeout_linger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread (timeout_linger) and resume traffic before the session is closed (timeout_idle) sending more than one request at once to trigger a pipelining operation between requests. This vulnerability affecting Varnish Cache 9.0.0 emerged from a port of the Varnish Enterprise non-blocking architecture for HTTP/2. New code was needed to adapt to a more recent workspace API that formalizes the pipelining operation. In addition to the workspace change on the Varnish Cache side, other differences created merge conflicts, like partial support for trailers in Varnish Enterprise. The conflict resolution missed one code path configuring pipelining to perform a complete workspace rollback, losing the guarantee that prefetched data would fit inside workspace_client during the transition from one request to the next. This can result in a workspace overflow, triggering a panic and crashing the Varnish server.</p> <p>Varnish Cache 9 before 9.0.1 allows a &#34;workspace overflow&#34; denial of service (daemon panic) after timeout_linger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread (timeout_linger) and resume traffic before the session is closed (timeout_idle) sending more than one request at once to trigger a pipelining operation between requests. This vulnerability affecting Varnish Cache 9.0.0 emerged from a port of the Varnish Enterprise non-blocking architecture for HTTP/2. New code was needed to adapt to a more recent workspace API that formalizes the pipelining operation. In addition to the workspace change on the Varnish Cache side, other differences created merge conflicts, like partial support for trailers in Varnish Enterprise. The conflict resolution missed one code path configuring pipelining to perform a complete workspace rollback, losing the guarantee that prefetched data would fit inside workspace_client during the transition from one request to the next. This can result in a workspace overflow, triggering a panic and crashing the Varnish server.</p> https://cve.radiocsirt.org/vuln/ghsa-5pmq-jgg5-3j6q https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-40396 <p><strong>Affected:</strong> Ubuntu:14.04:LTS: varnish, Ubuntu:Pro:16.04:LTS: varnish, Ubuntu:Pro:18.04:LTS: varnish, Ubuntu:Pro:20.04:LTS: varnish, Ubuntu:Pro:22.04:LTS: varnish, Ubuntu:24.04:LTS: varnish, Ubuntu:25.10: varnish, Ubuntu:26.04:LTS: varnish</p> <p>Varnish Cache 9 before 9.0.1 allows a &#34;workspace overflow&#34; denial of service (daemon panic) after timeout_linger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread (timeout_linger) and resume traffic before the session is closed (timeout_idle) sending more than one request at once to trigger a pipelining operation between requests. This vulnerability affecting Varnish Cache 9.0.0 emerged from a port of the Varnish Enterprise non-blocking architecture for HTTP/2. New code was needed to adapt to a more recent workspace API that formalizes the pipelining operation. In addition to the workspace change on the Varnish Cache side, other differences created merge conflicts, like partial support for trailers in Varnish Enterprise. The conflict resolution missed one code path configuring pipelining to perform a complete workspace rollback, losing the guarantee that prefetched data would fit inside workspace_client during the transition from one request to the next. This can result in a workspace overflow, triggering a panic and crashing the Varnish server.</p> <p><strong>Affected:</strong> Ubuntu:14.04:LTS: varnish, Ubuntu:Pro:16.04:LTS: varnish, Ubuntu:Pro:18.04:LTS: varnish, Ubuntu:Pro:20.04:LTS: varnish, Ubuntu:Pro:22.04:LTS: varnish, Ubuntu:24.04:LTS: varnish, Ubuntu:25.10: varnish, Ubuntu:26.04:LTS: varnish</p> <p>Varnish Cache 9 before 9.0.1 allows a &#34;workspace overflow&#34; denial of service (daemon panic) after timeout_linger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread (timeout_linger) and resume traffic before the session is closed (timeout_idle) sending more than one request at once to trigger a pipelining operation between requests. This vulnerability affecting Varnish Cache 9.0.0 emerged from a port of the Varnish Enterprise non-blocking architecture for HTTP/2. New code was needed to adapt to a more recent workspace API that formalizes the pipelining operation. In addition to the workspace change on the Varnish Cache side, other differences created merge conflicts, like partial support for trailers in Varnish Enterprise. The conflict resolution missed one code path configuring pipelining to perform a complete workspace rollback, losing the guarantee that prefetched data would fit inside workspace_client during the transition from one request to the next. This can result in a workspace overflow, triggering a panic and crashing the Varnish server.</p> https://cve.radiocsirt.org/vuln/ubuntu-cve-2026-40396 https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1061 <p>Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Varnish HTTP Cache ausnutzen, um einen Denial of Service Angriff durchzuführen.</p> <p>Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Varnish HTTP Cache ausnutzen, um einen Denial of Service Angriff durchzuführen.</p> https://cve.radiocsirt.org/vuln/wid-sec-w-2026-1061