CVE-2021-39242
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.
- Affected products
- Alt Linux, Astra Linux, Haproxy
- Haproxy
- < 2.2.16, 2.3.13, 2.4.3
- Fix
- Available
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 2.3% (82th percentile)
- Weakness
- CWE-755
- NVD status
- Modified
- Published
- 2021-08-17
CVE-2021-39242 at NVD
No indexed exploits for CVE-2021-39242 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2021-39242 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.