CVE-2026-44982 CrowdSec AppSec silently drops request body for chunked / HTTP-2 requests
Attackers can bypass WAF rules by sending chunked or HTTP/2 requests, causing CrowdSec to ignore request bodies.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44982?
CVE-2026-44982 is a high-severity vulnerability in crowdsecurity crowdsec, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-693
Which versions are affected by CVE-2026-44982?
3 open source packages ship an affected version, including github.com/crowdsecurity/crowdsec.
| Package | Affected | Fixed in |
|---|---|---|
github.com/crowdsecurity/crowdsec Go | From 1.5.0 | 1.7.8 |
github.com/crowdsecurity/crowdsec Go | From 1.5.0 | 1.7.8 |
github.com/crowdsecurity/crowdsec Go | From 1.5.0 | 1.7.8 |
How do I fix CVE-2026-44982?
Upgrade github.com/crowdsecurity/crowdsec to 1.7.8 or later.
Is CVE-2026-44982 being exploited?
There is no known exploitation of CVE-2026-44982 in the wild and no public exploit code.
Sources
Also known as GHSA-rw47-hm26-6wr7, GO-2026-5641, UBUNTU-CVE-2026-44982.