CVE-2026-31863 Improper Restriction of Excessive Authentication Attempts in github.com/anyproto/anytype-heart
Attackers can bypass challenge-based authentication in the local gRPC API to access Anytype without the required 4-digit code.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-31863?
CVE-2026-31863 is a low-severity authentication bypass vulnerability in anyproto anytype-cli, published on 11 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Anytype Heart is the middleware library for Anytype. The challenge-based authentication for the local gRPC client API can be bypassed, allowing an attacker to gain access without the 4-digit code. This vulnerability is fixed in anytype-heart 0.48.4, anytype-cli 0.1.11, and Anytype Desktop 0.54.5.
Weakness: CWE-307
Which versions are affected by CVE-2026-31863?
6 open source packages ship an affected version, including github.com/anyproto/anytype-cli and github.com/anyproto/anytype-heart. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
github.com/anyproto/anytype-cli Go | All versions | 0.1.11 |
github.com/anyproto/anytype-cli Go | All versions | 0.1.11 |
github.com/anyproto/anytype-cli Go | All versions | 0.1.11 |
github.com/anyproto/anytype-heart Go | All versions | 0.48.4 |
github.com/anyproto/anytype-heart Go | All versions | 0.48.4 |
github.com/anyproto/anytype-heart Go | All versions | 0.48.4 |
Products include Anytype Anytype Cli, Anytype Anytype Desktop, Anytype Anytype Heart.
How do I fix CVE-2026-31863?
Upgrade github.com/anyproto/anytype-cli to 0.1.11 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-31863 being exploited?
There is no known exploitation of CVE-2026-31863 in the wild and no public exploit code.
Sources
Also known as GHSA-vv3h-7qwr-722v, GO-2026-4680.