CVE-2026-12986
Payara Server Admin GUI SSRF and Token Leak Vulnerability
Description
A critical vulnerability in Admin GUI in Payara Server Full 4.x, 5.x, 6.x, 7.x, 7.2026.x, 6.2025.x, 6.2024.x on All platforms that allows the attacker to leak the admin gfresttoken to an attacker-controlled host that can result in a full unauthenticated takeover of Payara admin domain. A Server-Side Request Forgery (SSRF) vulnerability in the DownloadServlet of the Admin GUI in Payara Server allows a remote attacker to exfiltrate the administrator's REST session token (gfresttoken) to an attacker-controlled host via a crafted request URL. Combined with the absence of CSRF protection on DownloadServlet, an unauthenticated attacker can trick a logged-in administrator into triggering the token leak, then replay the stolen token to gain full administrative access to the Payara domain, leading to arbitrary code execution via WAR deployment. The vulnerability exists in the DownloadServlet and associated ContentSource implementations (LogViewerContentSource, LogFilesContentSource, LBConfigContentSource, ClientStubsContentSource) within the admingui:console-common module.
INFO
Published Date :
June 24, 2026, 2:08 p.m.
Last Modified :
June 24, 2026, 2:18 p.m.
Remotely Exploit :
No
Source :
Payara
Affected Products
The following products are affected by CVE-2026-12986
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 769c9ae7-73c3-4e47-ae19-903170fc3eb8 | ||||
| CVSS 4.0 | HIGH | 769c9ae7-73c3-4e47-ae19-903170fc3eb8 |
Solution
- Update Payara Server to a non-vulnerable version.
- Apply vendor patches for Payara Server.
- Review and restrict access to Admin GUI.
- Disable vulnerable DownloadServlet if possible.
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CVE-2026-12986 vulnerability anywhere in the article.