CVE catalog
CVE-2021-33194
golang-golang-x-net: CVE-2021-33194
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 7.49% · Oct 25, 2026
golang.org/x/net before v0.0.0-20210520170846-37e1c6afe023 allows attackers to cause a denial of service (infinite loop) via crafted ParseFragment input.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-golang-x-net | sid | 1:0.61.0-1 | fixed |
| Debian | golang-golang-x-net | forky | 1:0.61.0-1 | fixed |
| Debian | golang-golang-x-net | trixie | 1:0.27.0-2 | fixed |
| Debian | golang-golang-x-net | bookworm | 1:0.7.0+dfsg-1 | fixed |
| Go | golang.org/x/net | Not reported | 0.0.0-20210520170846-37e1c6afe023 | fixed |
| Go | golang.org/x/net | Not reported | 0.0.0-20210520170846-37e1c6afe023 | fixed |
| Ubuntu | lxd | pro | 2.18-0ubuntu6 | vulnerable |
| Ubuntu | lxd | pro | 2.19-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 2.20-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 2.20-0ubuntu4 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu2 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 2.21-0ubuntu4 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta2-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta3-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta5-0ubuntu2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0~beta7-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu3 | vulnerable |
| Ubuntu | lxd | pro | 3.0.0-0ubuntu4 | vulnerable |
| Ubuntu | lxd | pro | 3.0.1-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.2-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2+esm1 | vulnerable |
| Ubuntu | lxd | pro | 3.0.3-0ubuntu1~18.04.2+esm2 | fixed |
| Ubuntu | golang-golang-x-net-dev | pro | 1:0.0+git20190811.74dc4d7+dfsg-1 | vulnerable |
| Ubuntu | golang-golang-x-net-dev | pro | 1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm1 | vulnerable |
| Ubuntu | golang-golang-x-net-dev | pro | 1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-golang-x-net | source | sid | 1:0.0+git20210119.5f4716e+dfsg-4 | not yet assigned | Not reported | Not reported |
| Debian | golang-golang-x-net | source | forky | 1:0.0+git20210119.5f4716e+dfsg-4 | not yet assigned | Not reported | Not reported |
| Debian | golang-golang-x-net | source | trixie | 1:0.0+git20210119.5f4716e+dfsg-4 | not yet assigned | Not reported | Not reported |
| Debian | golang-golang-x-net | source | bookworm | 1:0.0+git20210119.5f4716e+dfsg-4 | not yet assigned | Not reported | Not reported |
| Go | golang.org/x/net | Go | Not reported | 0.0.0-20210520170846-37e1c6afe023 | Not reported | GHSA-83G2-8M93-V3W7 | Not reported |
| Go | golang.org/x/net | Go | Not reported | 0.0.0-20210520170846-37e1c6afe023 | Not reported | GO-2021-0238 | Not reported |
| Ubuntu | lxd | deb | pro | 3.0.3-0ubuntu1~18.04.2+esm2 | Not reported | UBUNTU-CVE-2021-33194 | Not reported |
| Ubuntu | golang-golang-x-net-dev | deb | pro | 1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2 | Not reported | UBUNTU-CVE-2021-33194 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [golang-golang-x-net-dev]Unknown
Source package: [golang-golang-x-net]
Details (2)
1:0.7.0+dfsg-1· all · bookwormFixed · Fixed:
1:0.0+git20210119.5f4716e+dfsg-4dsa · golang-golang-x-net · debian · bookworm; dsa · golang-golang-x-net · debian · 12
1:0.7.0+dfsg-1· all · bookwormFixed · Fixed:
1:0.0+git20210119.5f4716e+dfsg-4dsa · golang-golang-x-net · debian · bookworm; dsa · golang-golang-x-net · debian · 12
[Debian 13 (Trixie)]
- [golang-golang-x-net-dev]Unknown
Source package: [golang-golang-x-net]
Details (4)
1:0.27.0-2· all · trixieFixed · Fixed:
1:0.0+git20210119.5f4716e+dfsg-4dsa · golang-golang-x-net · debian · 13
1:0.27.0-2· all · trixieFixed · Fixed:
1:0.0+git20210119.5f4716e+dfsg-4dsa · golang-golang-x-net · debian · 13
1:0.53.0-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1:0.0+git20210119.5f4716e+dfsg-4dsa · golang-golang-x-net · debian · 13
1:0.53.0-2~bpo13+1· all · trixie-backportsFixed · Fixed:
1:0.0+git20210119.5f4716e+dfsg-4dsa · golang-golang-x-net · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-33194]
- [https://osv.dev/vulnerability/GO-2021-0238]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-33194]
- [https://security-tracker.debian.org/tracker/CVE-2021-33194]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-33194.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-0510.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]