CVE-2025-4839 itwanger paicoding CrossUtil.java cross-domain policy
Attackers can bypass cross-domain restrictions in paicoding due to permissive CORS policies, potentially enabling unauthorized cross-origin requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-4839?
CVE-2025-4839 is a low-severity vulnerability in itwanger paicoding, published on 17 May 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Which versions are affected by CVE-2025-4839?
It affects 1 product.
Products include Itwanger Paicoding.
How do I fix CVE-2025-4839?
No fix has been published for CVE-2025-4839 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-4839 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-4839 exists.
Other vulnerabilities in itwanger paicoding
- CVE-2026-3286 itwanger paicoding Image Save Endpoint ImageRestController.java save server-side request forgery
- CVE-2025-3966 itwanger paicoding Browsing History home information disclosure
- CVE-2025-3967 itwanger paicoding Article post improper authorization
- CVE-2025-3965 itwanger paicoding post cross site scripting
Sources
Also known as GHSA-vq5p-c2v7-53v5.