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OpenAdvisories
High · 7.5 CVE-2025-66507 EUVD-2025-201793GHSA-qmg5-v42x-qqhqGO-2025-4209

1Panel – CAPTCHA Bypass via Client-Controlled Flag

Published Dec 9, 2025 · Updated Dec 9, 2025 · Assigned by GitHub_M

Description

1Panel is an open-source, web-based control panel for Linux server management. Versions 2.0.13 and below allow 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 can be bypassed, enabling automated login attempts and significantly increasing the risk of account takeover (ATO). This issue is fixed in version 2.0.14.

Affected products

VendorProductAffectedFixed
1Panel-dev 1Panel < 2.0.14 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1
openSUSE Leap 15.6 govulncheck-vulndb 0.0.20251230T014957-150000.1.134.1 SUSE-SU-2026:0037-1

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/1Panel-dev/1Panel < 2.0.14 2.0.14 GHSA-qmg5-v42x-qqhq
Go github.com/1Panel-dev/1Panel < 2.0.14+incompatible 2.0.14+incompatible GO-2025-4209
Go github.com/1Panel-dev/1Panel/core < 0.0.0-20251128030527-ac43f00273be 0.0.0-20251128030527-ac43f00273be GHSA-qmg5-v42x-qqhq

Advisories 2

References