CVE-2026-22776

Publication date 12 January 2026

Last updated 10 July 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Description

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service (DoS) vulnerability exists in cpp-httplib due to the unsafe handling of compressed HTTP request bodies (Content-Encoding: gzip, br, etc.). The library validates the payload_max_length against the compressed data size received from the network, but does not limit the size of the decompressed data stored in memory.

Status

Package Ubuntu Release Status
cpp-httplib 26.04 LTS resolute
Vulnerable
25.10 questing Ignored end of life, was needed
25.04 plucky Ignored end of life, was needs-triage
24.04 LTS noble
Vulnerable
22.04 LTS jammy
Vulnerable

Patch details

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Package Patch details
cpp-httplib

Severity score breakdown

CVSS version:

Base score 8.7 · High

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Base score 7.5 · High

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Other references

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