CVE-2026-44981

HIGH

CrowdSec LAPI: Denial of Service via Unbounded Gzip Decompression

Title source: cna
STIX 2.1

Description

CrowdSec offers crowdsourced protection against malicious IPs. From 1.7.0 until 1.7.8, the LAPI router used gin-contrib/gzip with DefaultDecompressHandle globally in pkg/apiserver/controllers/controller.go, causing /v1/watchers and /v1/watchers/login to decompress unauthenticated gzip-compressed JSON request bodies without enforcing a maximum decompressed size and allowing excessive heap allocation that can make LAPI unreachable. This issue is fixed in version 1.7.8.

References (3)

Core 3

Scores

CVSS v4 8.2
EPSS 0.0029
EPSS Percentile 21.4%
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-409
Status published
Products (1)
crowdsecurity/crowdsec >= 1.7.0, < 1.7.8
Published Jul 16, 2026
Tracked Since Jul 17, 2026