CVE-2026-28435 affects yhirose cpp-httplib, a C++11 HTTP/HTTPS library, prior to version 0.35.0. The vulnerability allows an attacker to bypass configured payload size limits by sending a small, compressed request body that expands significantly upon decompression. This can lead to a denial of service through CPU or memory exhaustion. Rated 7.5 High on CVSS, this vulnerability is easily exploitable over the network with low attack complexity and no user interaction required. The primary impact is a high availability risk. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or ExploitDB. Community discussion is minimal, with only one mention observed.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.35.0CPE matchmatch criteria | cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.