The request body is read with sysread() calls sized by the remaining Content-Length. Perl grows the read buffer to the requested length before any data arrives, so the server tries to allocate as much memory as the client declares.
A remote attacker can send one request with a large Content-Length and a few body bytes, and perl exits with an out-of-memory error before the application is called. HTTP::Server::PSGI runs as a single process, so the server stays down until restarted.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| unaffected |
|
No data.
No data.
No data available yet.
Vendor Solution
Upgrade to Plack 1.0057 or later.
Tracking
Sign in to view the affected projects.
No advisories yet.
Sun, 25 Oct 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | HTTP::Server::PSGI versions before 1.0056 for Perl allow a single request to crash the server by declaring a large Content-Length. The request body is read with sysread() calls sized by the remaining Content-Length. Perl grows the read buffer to the requested length before any data arrives, so the server tries to allocate as much memory as the client declares. A remote attacker can send one request with a large Content-Length and a few body bytes, and perl exits with an out-of-memory error before the application is called. HTTP::Server::PSGI runs as a single process, so the server stays down until restarted. | |
| Title | HTTP::Server::PSGI versions before 1.0056 for Perl allow a single request to crash the server by declaring a large Content-Length | |
| Weaknesses | CWE-789 | |
| References |
|
Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-10-25T16:51:54.897Z
Reserved: 2026-10-23T16:47:20.192Z
Link: CVE-2026-115825
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-25T17:17:01.990
Modified: 2026-10-25T17:17:01.990
Link: CVE-2026-115825
Redhat
No data.
OpenCVE Enrichment
No data.
-
CWE-789
Memory Allocation with Excessive Size Value