XauenDevs Lagarto Chivato up to 0.4.2/0.4.3 improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00+

Summaryinfo

A vulnerability was found in XauenDevs Lagarto Chivato up to 0.4.2/0.4.3. It has been rated as critical. The impacted element is an unknown function. Performing a manipulation results in improper authentication. This vulnerability is identified as CVE-2026-126815. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in XauenDevs Lagarto Chivato up to 0.4.2/0.4.3. This affects an unknown function. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Pre-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.

The advisory is shared at grayback.es. This vulnerability is uniquely identified as CVE-2026-126815 since 11/11/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 0.4.4 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (Grayback): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Lagarto Chivato 0.4.4

Timelineinfo

11/11/2026 Advisory disclosed
11/11/2026 +0 days CVE reserved
11/11/2026 +0 days VulDB entry created
11/11/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: grayback.es
Status: Confirmed

CNA: Grayback
CVE: CVE-2026-126815 (🔒)

GCVE (CVE): GCVE-0-2026-126815
GCVE (VulDB): GCVE-100-435981

Entryinfo

Created: 11/11/2026 21:28
Changes: 11/11/2026 21:28 (62)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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