BIT-haproxy-2026-33555
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/haproxy/BIT-haproxy-2026-33555.json
- JSON Data
- https://api.osv.dev/v1/vulns/BIT-haproxy-2026-33555
- Aliases
- Published
- 2026-06-30T23:39:33.320Z
- Modified
- 2026-07-01T08:15:24.612174800Z
- Summary
- [none]
- Details
-
An issue was discovered in HAProxy before 3.3.6. The HTTP/3 parser does not check that the received body length matches a previously announced content-length when the stream is closed via a frame with an empty payload. This can cause desynchronization issues with the backend server and could be used for request smuggling. The earliest affected version is 2.6.
- Database specific
{ "severity": "Medium", "cpes": [ "cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*" ] }- References
-
- https://github.com/haproxy/haproxy/commit/05a295441c621089ffa4318daf0dbca2dd756a84
- https://nvd.nist.gov/vuln/detail/CVE-2026-33555
- https://r3verii.github.io/cve/2026/04/14/haproxy-h3-standalone-fin-smuggling.html
- https://www.haproxy.com/documentation/haproxy-aloha/changelog/
- https://www.haproxy.org
- https://www.mail-archive.com/haproxy@formilux.org/msg46752.html
Affected packages
Bitnami / haproxy
Package
- Name
- haproxy
- Purl
- pkg:bitnami/haproxy
Severity
- 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS Calculator