CVE-2025-4839

Name: CVE-2025-4839
Creator: NVD / NIST
Published: 2025-05-17T22:15:19.39+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.3/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2025-4839 is a low-severity vulnerability rated 2.3/10 on the CVSS scale. A vulnerability has been found in itwanger paicoding 1.0.0/1.0.1/1.0.2/1.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /paicoding-core/src/main/java/com/github/paicoding/forum/core/util/CrossUtil.java. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

A vulnerability has been found in itwanger paicoding 1.0.0/1.0.1/1.0.2/1.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /paicoding-core/src/main/java/com/github/paicoding/forum/core/util/CrossUtil.java. The manipulation leads to permissive cross-domain policy with untrusted domains. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS 4.0

2.3/10

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/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

EPSS Probability

0.25%

16.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Itwanger	Paicoding	1.0.0
Itwanger	Paicoding	1.0.1
Itwanger	Paicoding	1.0.2
Itwanger	Paicoding	1.0.3

References

https://github.com/ShenxiuSec/cve-proofs/blob/main/POC-20250510-02.mdExploit
https://vuldb.com/?ctiid.309307Permissions Required, VDB Entry
https://vuldb.com/?id.309307Third Party Advisory, VDB Entry
https://vuldb.com/?submit.574826Third Party Advisory, VDB Entry
https://github.com/ShenxiuSec/cve-proofs/blob/main/POC-20250510-02.mdExploit

Timeline

Published: May 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-4839?

How severe is CVE-2025-4839?

CVE-2025-4839 has a CVSS score of 2.3/10 (LOW severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2025-4839?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-4839?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST