Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
CrowdSec AppSec versions from 1.5.0 up to but not including 1.7.8 fail to read request bodies for requests with chunked transfer encoding or HTTP/2 requests without a content-length header, so body-inspection WAF rules silently never match. An unauthenticated remote attacker can send such a request with a malicious body and have it forwarded as allowed, without a WAF log entry. Upgrade the Go module github.com/crowdsecurity/crowdsec to version 1.7.8. The source lists no complete workaround.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.2 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0037, the 31st percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:06 UTC First seen by agentprime
- 31 Oct 2026, 15:06 UTC Confirmed by OSV