CVE-2026-44982
CrowdSec AppSec silently drops request body for chunked / HTTP-2 requests
- State
- Published
- Severity
- 7.2 High
- Published
- Jul 16, 2026
- Updated
- Jul 17, 2026
- Reserved
- May 8, 2026
Description
CrowdSec offers crowdsourced protection against malicious IPs. From 1.5.0 until 1.7.8, pkg/appsec/request.go NewParsedRequestFromRequest allocated a request body buffer from max(r.ContentLength, 0), so HTTP/1.1 requests using Transfer-Encoding: chunked and HTTP/2 requests without a content-length header produced an empty body and caused WAF rules targeting REQUEST_BODY, BODY_ARGS, ARGS_POST, JSON, or XML to be skipped. This issue is fixed in version 1.7.8.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | GitHub_M |
Weaknesses
- CWE-693 Protection Mechanism Failure
Affected Products
| Product | Versions |
|---|---|
crowdseccrowdsecurity |
|
References
- https://github.com/crowdsecurity/crowdsec/security/advisories/GHSA-rw47-hm26-6wr7
- https://github.com/crowdsecurity/crowdsec/pull/4355
- https://github.com/crowdsecurity/crowdsec/commit/3d5c4d9b127091e9063b9b5eb785372a599a4435
- https://github.com/crowdsecurity/crowdsec/commit/57a793548671e6bbd2cde5562fe87b856ec9c642
- https://github.com/crowdsecurity/crowdsec/releases/tag/v1.7.8
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