CVE-2025-24369

low

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.

References

https://xeiaso.net/notes/2025/GHSA-56w8-8ppj-2p4f

https://github.com/Xe/x/security/advisories/GHSA-56w8-8ppj-2p4f

https://github.com/Xe/x/commit/e09d0226a628f04b1d80fd83bee777894a45cd02

https://github.com/Xe/x/commit/7bd7b209f4f1b897de85ec8973458dc8be606a8b

Details

Source: Mitre, NVD

Published: 2025-01-27

Updated: 2025-01-27

Risk Information

CVSS v2

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

CVSS v4

Base Score: 2.3

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: Low