Pre-account hijacking via planted password

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-126815
StatePUBLISHED
AssignerGrayback
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-11 20:17:07 UTC
Updated2026-11-11 20:17:07 UTC
DescriptionPre-account hijacking in the authentication flow in Lagarto Chivato 0.4.1 and earlier on Web allows remote unauthenticated attackers to take over arbitrary accounts via a password planted on an unregistered email address that becomes valid upon the victim’s first passwordless login.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from 772f0079-75c2-41ca-913e-d9072716578b

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Problem Types: CWE-287 | CWE-287 CWE-287

VersionSourceTypeScoreSeverityVector
3.1772f0079-75c2-41ca-913e-d9072716578bSecondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA XauenDevs Lagarto Chivato affected 0.1.0 0.4.2 custom Not specified
CNA XauenDevs Lagarto Chivato unaffected 0.4.4 Not specified

References

ReferenceSourceLinkTags
www.grayback.es/en/advisories 772f0079-75c2-41ca-913e-d9072716578b www.grayback.es
www.grayback.es/advisories 772f0079-75c2-41ca-913e-d9072716578b www.grayback.es
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Daniel Hidalgo (hidalg0d) (en)

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