getgrav Login OAuth up to 1.4.2 OAuth Account Provisioning hash predictable salt

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.0$0-$5k2.50

Summaryinfo

A vulnerability classified as critical has been found in getgrav Login OAuth up to 1.4.2. Affected by this issue is some unknown functionality of the component OAuth Account Provisioning. The manipulation leads to hash predictable salt. This vulnerability is listed as CVE-2026-109321. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in getgrav Login OAuth up to 1.4.2. This issue affects some unknown processing of the component OAuth Account Provisioning. The manipulation with an unknown input leads to a hash predictable salt vulnerability. Using CWE to declare the problem leads to CWE-760. The product uses a one-way cryptographic hash against an input that should not be reversible, such as a password, but the product uses a predictable salt as part of the input. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Grav Login OAuth plugin (grav-plugin-login-oauth) before 1.4.3 provisions OAuth accounts as ordinary Grav users with a deterministic <provider>.<id> username and an unsalted MD5 hash of the provider identifier as the password, without disabling password login. Unauthenticated remote attackers who learn or guess a provider identifier can reproduce these credentials and log in, gaining administrative control of privileged accounts.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-109321 since 10/12/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1110.002 according to MITRE ATT&CK.

Upgrading to version 1.4.3 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.1
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Hash predictable salt
CWE: CWE-760 / CWE-759 / CWE-325
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: Login OAuth 1.4.3

Timelineinfo

10/12/2026 Advisory disclosed
10/12/2026 +0 days CVE reserved
10/12/2026 +0 days VulDB entry created
10/12/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-109321 (🔒)
GCVE (CVE): GCVE-0-2026-109321
GCVE (VulDB): GCVE-100-417143

Entryinfo

Created: 10/12/2026 20:14
Changes: 10/12/2026 20:14 (76)
Complete: 🔍
Cache ID: 216::103

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