CVE-2022-26652 Arbitrary file write in nats-server
An attacker can write files to arbitrary locations via a malicious ZIP archive in JetStream streams, potentially compromising the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-26652?
CVE-2022-26652 is a medium-severity path traversal vulnerability in n/a, published on 10 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
NATS nats-server before 2.7.4 allows Directory Traversal (with write access) via an element in a ZIP archive for JetStream streams. nats-streaming-server before 0.24.3 is also affected.
Weakness: CWE-22
Which versions are affected by CVE-2022-26652?
8 open source packages ship an affected version, including github.com/nats-io/nats-server/v2, nats and github.com/nats-io/nats-server. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
github.com/nats-io/nats-server/v2 Go | From 2.2.0 | 2.7.4 |
github.com/nats-io/nats-server/v2 Go | From 2.2.0 | 2.7.4 |
github.com/nats-io/nats-server/v2 Go | From 2.2.0 | 2.7.4 |
nats Bitnami | From 2.2.0 | 2.7.4 |
github.com/nats-io/nats-server Go | All versions | None |
github.com/nats-io/nats-streaming-server Go | From 0.15.0 | 0.24.3 |
2 more packages
github.com/nats-io/nats-streaming-server Go | From 0.15.0 | 0.24.3 |
github.com/nats-io/nats-streaming-server Go | From 0.15.0 | 0.24.3 |
Products include Linuxfoundation Nats-Server, Nats Nats Streaming Server.
How do I fix CVE-2022-26652?
Upgrade github.com/nats-io/nats-server/v2 to 2.7.4 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2022-26652 being exploited?
There is no known exploitation of CVE-2022-26652 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2022-28357 NATS nats-server allows directory traversal via unintended path to a management action
- CVE-2026-58253 NATS Server: Route API Auth Bypass
- CVE-2022-24450 Incorrect Authorization in NATS nats-server
- CVE-2026-33216 NATS has MQTT plaintext password disclosure
- CVE-2026-58207 NATS Server: Remote crash via integer overflow in Connz pagination
Sources
Also known as BIT-nats-2022-26652, GHSA-6h3m-36w8-hv68, GO-2022-0351.