Payara Server up to 7.2026.5 Admin GUI cross-site request forgery

Summaryinfo

A vulnerability has been found in Payara Server up to 7.2026.5 and classified as problematic. This affects an unknown function of the component Admin GUI. The manipulation leads to cross-site request forgery. This vulnerability is documented as CVE-2026-12986. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Payara Server up to 7.2026.5 and classified as problematic. This issue affects an unknown part of the component Admin GUI. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. Using CWE to declare the problem leads to CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at docs.payara.fish. The identification of this vulnerability is CVE-2026-12986 since 06/23/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept.

Upgrading to version 4.1.2.191.56, 5.88.0, 6.39.0, 7.1.0 or 7.2026.6 eliminates this vulnerability.

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Productinfo

Vendor

• Payara

Name

• Server

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19
• 5.20
• 5.21
• 5.22
• 5.23
• 5.24
• 5.25
• 5.26
• 5.27
• 5.28
• 5.29
• 5.30
• 5.31
• 5.32
• 5.33
• 5.34
• 5.35
• 5.36
• 5.37
• 5.38
• 5.39
• 5.40
• 5.41
• 5.42
• 5.43
• 5.44
• 5.45
• 5.46
• 5.47
• 5.48
• 5.49
• 5.50
• 5.51
• 5.52
• 5.53
• 5.54
• 5.55
• 5.56
• 5.57
• 5.58
• 5.59
• 5.60
• 5.61
• 5.62
• 5.63
• 5.64
• 5.65
• 5.66
• 5.67
• 5.68
• 5.69
• 5.70
• 5.71
• 5.72
• 5.73
• 5.74
• 5.75
• 5.76
• 5.77
• 5.78
• 5.79
• 5.80
• 5.81
• 5.82
• 5.83
• 5.84
• 5.85
• 5.86
• 5.87
• 5.201.0
• 5.201.1
• 5.201.2
• 5.2022.0
• 5.2022.1
• 5.2022.2
• 5.2022.3
• 5.2022.4
• 5.2022.5
• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10
• 6.11
• 6.12
• 6.13
• 6.14
• 6.15
• 6.16
• 6.17
• 6.18
• 6.19
• 6.20
• 6.21
• 6.22
• 6.23
• 6.24
• 6.25
• 6.26
• 6.27
• 6.28
• 6.29
• 6.30
• 6.31
• 6.32
• 6.33
• 6.34
• 6.35
• 6.36
• 6.37
• 6.38
• 6.2025.0
• 6.2025.1
• 6.2025.2
• 6.2025.3
• 6.2025.4
• 6.2025.5
• 6.2025.6
• 6.2025.7
• 6.2025.8
• 6.2025.9
• 6.2025.10
• 6.2025.11
• 7.0
• 7.2026.0
• 7.2026.1
• 7.2026.2
• 7.2026.3
• 7.2026.4
• 7.2026.5

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