Description
Anubis is a tool that allows administrators to protect bots against AI scrapers through bot-checking heuristics and a proof-of-work challenge to discourage scraping from multiple IP addresses. Anubis allows attackers to bypass the bot protection by requesting a challenge, formulates any nonce (such as 42069), and then passes the challenge with difficulty zero. Commit e09d0226a628f04b1d80fd83bee777894a45cd02 fixes this behavior by not using a client-specified difficulty value.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Xe | x | < v1.11.0-37-gd98d70a | — |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | govulncheck-vulndb | 0.0.20250207T224745-150000.1.32.1 | SUSE-SU-2025:0429-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | anubis | 1.24.0-1.1 | openSUSE-SU-2025:15847-1 |
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250130T185858-1.1 | openSUSE-SU-2025:14728-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20250207T224745-150000.1.32.1 | SUSE-SU-2025:0429-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | anubis | 1.15.2-r0 | — |
| Alpine v3.23 | anubis | 1.15.2-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/Xe/x | all versions | — | GO-2025-3424 |
Advisories 3
- openSUSE-SU-2025:15847-1 anubis-1.24.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:0429-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Feb 5, 2026
- openSUSE-SU-2025:14728-1 govulncheck-vulndb-0.0.20250130T185858-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026