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CVE-2025-24369

Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0

2.3 LowFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.43%Up 0.4 points since Jan 28, 2025
90%50%10%1%

What each source reports

CVE List Score used 2.3

Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0

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.

Record
CVE-2025-24369
CVSS 4.0
2.3 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-807
Updated
2026-11-02
EUVDEUVD-2025-3683 2.3

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.

Record
EUVD-2025-3683
CVSS 4.0
2.3 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-03
NVD 2.3

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.

Record
CVE-2025-24369
CVSS 4.0
2.3 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness
CWE-807
Updated
2026-11-02
OSVALPINE-CVE-2025-24369 2.3

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.

Record
ALPINE-CVE-2025-24369
CVSS 4.0
2.3 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-03
OSV 2.3

Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0

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.

Record
CVE-2025-24369
CVSS 4.0
2.3 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-807
Updated
2026-11-02
OSVGO-2025-3424 No score

Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0 in github.com/Xe/x

Anubis has a bot protection bypass when a sophisticated attacker asks to pass a challenge of difficulty 0 in github.com/Xe/x.

NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.

(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)

The additional affected modules and versions are: github.com/Xe/x before v1.11.0-37-gd98d70a.

Record
GO-2025-3424
Updated
2026-11-02
OSVopenSUSE-SU-2025:14728-1 No score

govulncheck-vulndb-0.0.20250130T185858-1.1 on GA media

These are all security issues fixed in the govulncheck-vulndb-0.0.20250130T185858-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:14728-1
Updated
2026-11-02
OSVopenSUSE-SU-2025:15847-1 No score

anubis-1.24.0-1.1 on GA media

These are all security issues fixed in the anubis-1.24.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2025:15847-1
Updated
2026-11-02
OSVSUSE-SU-2025:0429-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20250207T224745 2025-02-07T22:47:45Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3456 CVE-2025-24786 GHSA-9r4c-jwx3-3j76
    • GO-2025-3457 CVE-2025-24787 GHSA-c7w4-9wv8-7x7c
    • GO-2025-3458 CVE-2025-24366 GHSA-vj7w-3m8c-6vpx

  • Update to version 0.0.20250206T175003 2025-02-06T17:50:03Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2023-1867 CVE-2022-47930 GHSA-c58h-qv6g-fw74
    • GO-2024-3244 CVE-2024-50354 GHSA-cph5-3pgr-c82g

  • Update to version 0.0.20250206T165438 2025-02-06T16:54:38Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3428 CVE-2025-22867
    • GO-2025-3447 CVE-2025-22866

  • Update to version 0.0.20250205T232745 2025-02-05T23:27:45Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3408
    • GO-2025-3448 GHSA-23qp-3c2m-xx6w
    • GO-2025-3449 GHSA-mx2j-7cmv-353c
    • GO-2025-3450 GHSA-w7wm-2425-7p2h
    • GO-2025-3454 GHSA-mj4v-hp69-27x5
    • GO-2025-3455 GHSA-vqv5-385r-2hf8

  • Update to version 0.0.20250205T003520 2025-02-05T00:35:20Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3451

  • Update to version 0.0.20250204T220613 2025-02-04T22:06:13Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2025-3431 CVE-2025-24884 GHSA-hcr5-wv4p-h2g2
    • GO-2025-3433 CVE-2025-23216 GHSA-47g2-qmh2-749v
    • GO-2025-3434 CVE-2025-24376 GHSA-fc89-jghx-8pvg
    • GO-2025-3435 CVE-2025-24784 GHSA-756x-m4mj-q96c
    • GO-2025-3436 CVE-2025-24883 GHSA-q26p-9cq4-7fc2
    • GO-2025-3437 GHSA-274v-mgcv-cm8j
    • GO-2025-3438 CVE-2024-11741 GHSA-wxcc-2f3q-4h58
    • GO-2025-3442 CVE-2025-24371 GHSA-22qq-3xwm-r5x4
    • GO-2025-3443 GHSA-r3r4-g7hq-pq4f
    • GO-2025-3444 CVE-2024-35177
    • GO-2025-3445 CVE-2024-47770

  • Use standard RPM macros to unpack the source and populate a working directory. Fixes build with RPM 4.20.

  • Update to version 0.0.20250130T185858 2025-01-30T18:58:58Z. Refs jsc#PED-11136 Go CVE Numbering Authority IDs added or updated with aliases:

    • GO-2024-2842 CVE-2024-3727 GHSA-6wvf-f2vw-3425
    • GO-2024-3181 CVE-2024-9313 GHSA-x5q3-c8rm-w787
    • GO-2024-3188 CVE-2024-9312 GHSA-4gfw-wf7c-w6g2
    • GO-2025-3372 CVE-2024-45339 GHSA-6wxm-mpqj-6jpf
    • GO-2025-3373 CVE-2024-45341
    • GO-2025-3383 CVE-2024-45340
    • GO-2025-3408
    • GO-2025-3412 CVE-2024-10846 GHSA-36gq-35j3-p9r9
    • GO-2025-3420 CVE-2024-45336
    • GO-2025-3421 CVE-2025-22865
    • GO-2025-3424 CVE-2025-24369
    • GO-2025-3426 CVE-2025-0750 GHSA-hp5j-2585-qx6g
    • GO-2025-3427 CVE-2024-13484 GHSA-58fx-7v9q-3g56
Record
SUSE-SU-2025:0429-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
anubis
Alpine:v3.23
 before 1.15.2-r0
1.15.2-r0
anubis
Alpine:v3.24
 before 1.15.2-r0
1.15.2-r0
github.com/Xe/x
Go
 All versions None known
govulncheck-vulndb
SUSE:Linux Enterprise Module for Package Hub 15 SP6
From an advisory covering 28 CVEs
 before 0.0.20250207T224745-150000.1.32.1
0.0.20250207T224745-150000.1.32.1
govulncheck-vulndb
openSUSE:Leap 15.6
From an advisory covering 28 CVEs
 before 0.0.20250207T224745-150000.1.32.1
0.0.20250207T224745-150000.1.32.1
govulncheck-vulndb
openSUSE:Tumbleweed
From an advisory covering 5 CVEs
 before 0.0.20250130T185858-1.1
0.0.20250130T185858-1.1
anubis
openSUSE:Tumbleweed
 before 1.24.0-1.1
1.24.0-1.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliases, publishedEUVD
first indexedCVE List, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-24369 is a low vulnerability (CVSS 2.3) in Xe X, published January 27, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in anubis 1.15.2-r0.

References

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