CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...

CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...

CVE-2026-40396

Varnish Cache 9 prior to 9.0.1 is affected by a workspace overflow DoS (daemon panic) that can be triggered by a malicious HTTP/1 request sequence: after timeout_linger releases a worker thread, resuming traffic with multiple requests before the session closes (timeout_idle) can cause a pipelinin...

CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...

CVE-2026-40395

Varnish Enterprise before 6.0.16r12 allows a "workspace overflow" denial of service daemon panic for shared VCL. The headerplus.writereq0 function from vmodheaderplus updates the underlying req0, which is normally the original read-only request from which req is derived readable and writable from...

CVE-2026-40395

Varnish Enterprise before 6.0.16r12 allows a "workspace overflow" denial of service daemon panic for shared VCL. The headerplus.writereq0 function from vmodheaderplus updates the underlying req0, which is normally the original read-only request from which req is derived readable and writable from...

CVE-2026-40395

Varnish Enterprise before 6.0.16r12 allows a "workspace overflow" denial of service daemon panic for shared VCL. The headerplus.writereq0 function from vmodheaderplus updates the underlying req0, which is normally the original read-only request from which req is derived readable and writable from...

CVE-2026-40395

CVE-2026-40395 affects Varnish Enterprise prior to 6.0.16r12. A workspace overflow can occur in the vmod_headerplus module when header fields are excessive in a modified req0, causing a daemon panic and Denial of Service. Details in multiple sources describe the root cause as the headerplus.write...

CVE-2026-40395

Varnish Enterprise before 6.0.16r12 allows a "workspace overflow" denial of service daemon panic for shared VCL. The headerplus.writereq0 function from vmodheaderplus updates the underlying req0, which is normally the original read-only request from which req is derived readable and writable from...

CVE-2026-40394

Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 are affected by a workspace overflow during HTTP/2 session upgrade. The vulnerability arises when the HTTP/2 upgrade path repurposes an HTTP/1 request as stream zero and allocates a buffer to reserve space for frames, which can ...

CVE-2026-40394

Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 allows a "workspace overflow" denial of service daemon panic for certain amounts of prefetched data. The setup of an HTTP/2 session starts with a speculative HTTP/1 transport, and upon upgrading to h2 the HTTP/1 request is...

CVE-2026-40394

Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 allows a "workspace overflow" denial of service daemon panic for certain amounts of prefetched data. The setup of an HTTP/2 session starts with a speculative HTTP/1 transport, and upon upgrading to h2 the HTTP/1 request is...

CVE-2026-40394

Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 allows a "workspace overflow" denial of service daemon panic for certain amounts of prefetched data. The setup of an HTTP/2 session starts with a speculative HTTP/1 transport, and upon upgrading to h2 the HTTP/1 request is...

CVE-2026-40394

Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 allows a "workspace overflow" denial of service daemon panic for certain amounts of prefetched data. The setup of an HTTP/2 session starts with a speculative HTTP/1 transport, and upon upgrading to h2 the HTTP/1 request is...

PT-2026-32184

Name of the Vulnerable Software and Affected Versions Varnish Enterprise versions prior to 6.0.16r12 Description Varnish Enterprise versions before 6.0.16r12 are susceptible to a denial of service daemon panic due to a workspace overflow when handling shared VCL. The headerplus.write req0 functio...

PT-2026-32183

Name of the Vulnerable Software and Affected Versions Varnish Cache versions prior to 9.0.1 Varnish Enterprise versions prior to 6.0.16r11 Description Varnish Cache and Varnish Enterprise are susceptible to a denial of service daemon panic due to a workspace overflow. This occurs when handling...

Varnish Enterprise 安全漏洞

Varnish Enterprise is a high-performance caching software developed by the Varnish company. It is designed for handling high-traffic scenarios and optimizing business operations. Versions of Varnish Enterprise prior to 6.0.16r12 contained security vulnerabilities. These vulnerabilities stemmed fr...

PT-2026-32185

Name of the Vulnerable Software and Affected Versions Varnish Cache versions prior to 9.0.1 Description Varnish Cache 9 before 9.0.1 is susceptible to a denial of service due to a workspace overflow, potentially leading to a daemon panic. A malicious client can exploit this by sending an HTTP/1...

pcre: workspace overflow for (*ACCEPT) with deeply nested parentheses (8.39/13, 10.22/12)

The compilebranch function in pcrecompile.c in PCRE 8.x before 8.39 and pcre2compile.c in PCRE2 before 10.22 mishandles patterns containing an ACCEPT substring in conjunction with nested parentheses, which allows remote attackers to execute arbitrary code or cause a denial of service stack-based...