Description
A cross-site request forgery flaw was found in etcd 3.3.1 and earlier. An attacker can set up a website that tries to send a POST request to the etcd server and modify a key. Adding a key is done with PUT so it is theoretically safe (can't PUT from an HTML form or such) but POST allows creating in-order keys that an attacker can send.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | etcd | 3.3.1 and earlier | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | etcd | 3.4.23-1 | — |
| Debian 13 | etcd | 3.4.23-1 | — |
| Debian 12 | etcd | 3.4.23-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | etcd | No fix yet | — |
| Ubuntu 25.10 | etcd | No fix yet | — |
| Ubuntu 16.04 LTS | etcd | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 24.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 22.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 20.04 LTS | etcd | No fix yet | — |
| Ubuntu Pro 18.04 LTS | etcd | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | go.etcd.io/etcd/v3 | < 3.4.0 | 3.4.0 | GHSA-5gjm-fj42-x983 |
Advisories 1
- WID-SEC-2022-0510 IBM DB2: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 18, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1552714
- https://github.com/coreos/etcd/issues/9353
- FEDORA-2019-833466697f vendor-advisory
- FEDORA-2019-219b0b0b6a vendor-advisory