vulnerability
Arch Linux: Url request injection (CVE-2021-36740)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:L/Au:N/C:P/I:P/A:N) | Jul 14, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
Jul 14, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
Varnish Cache before version 6.6.1, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-36740
- https://attackerkb.com/topics/CVE-2021-36740
- URL-https://docs.varnish-software.com/security/VSV00007/
- URL-https://github.com/varnishcache/varnish-cache/commit/82b0a629f60136e76112c6f2c6372cce77b683be
- URL-https://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f4291792214a29405cf
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THV2DQA2GS65HUCKK4KSD2XLN3AAQ2V5/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBNLDEOTGYRIEQZBWV7F6VPYS4O2AAK/
- URL-https://security.archlinux.org/ASA-202107-28
- URL-https://varnish-cache.org/security/VSV00007.html
- URL-https://www.debian.org/security/2022/dsa-5088
- CWE-444
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