CVE-2025-66507: Github.com/1Panel dev/1Panel 1Panel – CAPTCHA Bypass Vulnerability
HIGHCVE-2025-66507 is a HIGH (CVSS 7.5) 1panel – captcha bypass vulnerability (CWE-807: Reliance on Untrusted Inputs in a Security Decision) affecting Github.com/1Panel dev/1Panel libraries in the Go ecosystem. The issue involves 1panel – captcha bypass via client-controlled flag. Remediation is available by upgrading affected packages to version 2.0.14, 0.0.0-20251128030527-ac43f00273be.
CVE-2025-66507 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2025-66507
To remediate this vulnerability, upgrade all affected Github.com/1Panel dev/1Panel dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/1Panel-dev/1Panel to 2.0.14Upgrade github.com/1Panel-dev/1Panel/core to 0.0.0-20251128030527-ac43f00273beRun the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/1Panel-dev/1PanelHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-66507, inspect your project dependencies for Github.com/1Panel dev/1Panel:
inspect dependencies for github.com/1Panel-dev/1PanelAnalyze the terminal output to locate any version of Github.com/1Panel dev/1Panel in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.14), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-807: Reliance on Untrusted Inputs in a Security Decision, where the product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism. In Github.com/1Panel dev/1Panel, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-66507 Affected Github.com/1Panel dev/1Panel Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/1Panel-dev/1Panel
|
Go |
< 2.0.14
|
2.0.14
|
|
github.com/1Panel-dev/1Panel/core
|
Go |
< 0.0.0-20251128030527-ac43f00273be
|
0.0.0-20251128030527-ac43f00273be
|
References
Frequently Asked Questions
What is CVE-2025-66507?
Which Github.com/1Panel dev/1Panel versions are affected?
What version fixes CVE-2025-66507?
Is github.com/1Panel-dev/1Panel affected?
Is github.com/1Panel-dev/1Panel/core affected?
What is the CVSS score of CVE-2025-66507?
What CWE is associated with CVE-2025-66507?
How can I check Go dependencies for CVE-2025-66507?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-qmg5-v42x-qqhq",
"modified" : "2025-12-09T19:19:10Z",
"published" : "2025-12-08T17:56:27Z",
"aliases" : [ "CVE-2025-66507" ],
"summary" : "1Panel – CAPTCHA Bypass via Client-Controlled Flag ",
"details" : "### Summary\n\nA CAPTCHA bypass vulnerability in the 1Panel authentication API allows an unauthenticated attacker to disable CAPTCHA verification by abusing a client-controlled parameter. Because the server previously trusted this value without proper validation, CAPTCHA protections could be bypassed, enabling automated login attempts and significantly increasing the risk of account takeover (ATO).\n\n### Details\n\nThe /api/login endpoint accepts a boolean field named ignoreCaptcha directly from the client request body:\n\n`\"ignoreCaptcha\": true`\n\n\nThe backend implementation uses this value to determine whether CAPTCHA validation should be performed:\n\n```\nif !req.IgnoreCaptcha {\n if errMsg := captcha.VerifyCode(req.CaptchaID, req.Captcha); errMsg != \"\" {\n helper.BadAuth(c, errMsg, nil)\n return\n }\n}\n\n```\n\nBecause req.IgnoreCaptcha is taken directly from user input—with no server-side validation, no session binding, and no privilege checks—any unauthenticated attacker can force CAPTCHA validation to be skipped.\n\nThere are no additional conditions, such as:\n\nno requirement for MFA\n\nno trusted device\n\nno IP reputation checks\n\nno prior valid session\n\nno rate limiting\n\nThis results in CAPTCHA being entirely client-controlled, which violates fundamental authentication and anti-automation security assumptions.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/1Panel-dev/1Panel"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.0.14"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/1Panel-dev/1Panel/core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.0.0-20251128030527-ac43f00273be"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-qmg5-v42x-qqhq"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-66507"
}, {
"type" : "WEB",
"url" : "https://github.com/1Panel-dev/1Panel/commit/ac43f00273be745f8d04b90b6e2b9c1a40ef7bca"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/1Panel-dev/1Panel"
}, {
"type" : "WEB",
"url" : "https://github.com/1Panel-dev/1Panel/releases/tag/v2.0.14"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-290", "CWE-602", "CWE-807" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2025-12-08T17:56:27Z",
"nvd_published_at" : "2025-12-09T16:18:19Z"
}
}