How severe is CVE-2023-35925?

CVE-2023-35925 has a CVSS score of 6.2/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2023-35925?

CVE-2023-35925 affects the following packages: com.fastasyncworldedit:FastAsyncWorldEdit-Core (Maven), com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit (Maven). Ecosystems affected: Maven.

How do I fix CVE-2023-35925?

Update com.fastasyncworldedit:FastAsyncWorldEdit-Core to 2.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-35925 is resolved across your whole dependency graph.

How do I detect CVE-2023-35925 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.fastasyncworldedit:FastAsyncWorldEdit-Core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2023-35925 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is CVE-2023-35925 actively exploited in the wild?

No public exploit code has been indexed for CVE-2023-35925 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2023-35925?

CVE-2023-35925 has an EPSS (Exploit Prediction Scoring System) score of 0.3%, placing it in the 24th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2023-35925?

CVE-2023-35925 is classified as Uncontrolled Resource Consumption (CWE-400). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2023-35925 published, and has it been updated?

CVE-2023-35925 was published on June 23, 2023 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2023-35925 — FastAsyncWorldEdit-Core

MEDIUMFix: IntellectualSites/FastAsyncWorldEdit#2285

CVE-2023-35925 is a medium-severity (CVSS 6.2) Uncontrolled Resource Consumption vulnerability in com.fastasyncworldedit:FastAsyncWorldEdit-Core. A fix is available for com.fastasyncworldedit:FastAsyncWorldEdit-Core — see the affected versions and patch details below.

FastAsyncWorldEdit vulnerable to Uncontrolled Resource Consumption

Also known asGHSA-whj9-m24x-qhhp

Published

Jun 23, 2023

Updated

Oct 28, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-35925.

EPSS Exploitation Probability

via FIRST.org ↗

0.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs24th percentile — riskier than 24% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected

☕com.fastasyncworldedit:FastAsyncWorldEdit-Core☕com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Coordinated Disclosure Timeline

10.06.2023: Issue reported to IntellectualSites
11.06.2023: Issue is acknowledged
12.06.2023: Issue has been fixed
22.06.2023: Advisory has been published

Impacted version range

Before 2.6.3

Details

Proof of Concept

As a user, do the following:

Select position 1 via //pos1
Select position 2 adding the "Infinity" keyword via //pos2 Infinity
Execute any further operation.

The steps 1 and 2 are interchangeable.

Impact

Such a task has a possibility of bringing the performing server down.

CVE

CVE-2023-35925

Credit

This issue was discovered and reported by @SuperMonis.

Solution

On June 12, 2023, a patch, https://github.com/IntellectualSites/FastAsyncWorldEdit/pull/2285, has been merged addressing the vulnerability. We strongly recommend users to update their version of FastAsyncWorldEdit to 2.6.3 as soon as possible.

Workarounds

There is no direct mitigation besides updating FastAsyncWorldEdit to a patched version.

Additional Information

Users with access to the logs/ folder or shell access on their server can try to identify possible abuses of this issue by going through the logs. To sieve through the data, you can use the regex query \/\/pos[12] Infinity, then investigate all log entries that return results.

Disclosure Policy

If you discover a security vulnerability within our software, please report the issue according to our vulnerability disclosure policy.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`com.fastasyncworldedit:FastAsyncWorldEdit-Core`	all versions	2.6.3`com.fastasyncworldedit:FastAsyncWorldEdit-Core:2.6.3`
☕Maven	`com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit`	all versions	2.6.3`com.fastasyncworldedit:FastAsyncWorldEdit-Bukkit:2.6.3`

Affected Products

1 product · 1 configurations

Application

fastasyncworldeditintellectualsites

< 2.6.3

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.fastasyncworldedit:FastAsyncWorldEdit-Core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.fastasyncworldedit:FastAsyncWorldEdit-Core to 2.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-35925 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Coordinated Disclosure Timeline - 10.06.2023: Issue reported to IntellectualSites - 11.06.2023: Issue is acknowledged - 12.06.2023: Issue has been fixed - 22.06.2023: Advisory has been published ### Impacted version range Before 2.6.3 ### Details #### Proof of Concept As a user, do the following: 1. Select position 1 via `//pos1` 2. Select position 2 adding the "Infinity" keyword via `//pos2 Infinity` 3. Execute any further operation. The steps 1 and 2 are interchangeable. #### Impact Such a task has a possibility of bringing the performing server down. #### CVE - CVE-2023-3592