PT-2026-31629 · Unknown · Http Server

Published 2026-04-09 · Updated 2026-04-09 · CVE-2026-5440

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions HTTP Server (affected versions not specified)

Description A memory exhaustion issue exists in the HTTP server due to the unrestricted use of the Content-Length header. The server allocates memory based on the value provided in the Content-Length header without any upper limit. A specially crafted HTTP request with a very large Content-Length value can cause excessive memory allocation, leading to server termination, even without sending a request body.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-5440

Affected Products

Http Server

References · 11

• https://ubuntu.com/security/CVE-2026-5440 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-5440 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5440 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-5440 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-5440 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-5440 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/2042341615142891898 · Twitter Post
• https://machinespirits.de · Note
• https://kb.cert.org/vuls/id/536588 · Note
• https://orthanc-server.com · Note
• https://twitter.com/CVEnew/status/2042302821551521815 · Twitter Post