CVE-2026-0948VulnerabilityPublished 4 Feb 2026

CVE-2026-0948: Drupal Microsoft Entra ID SSO Login · Authentication Bypass Using an Alternate Path or Channel

Affects Drupal Microsoft Entra ID SSO LoginSource CVE Database V5

Not known to be exploited · CVSS 6.5 Medium : upgrade to 1.0.4 when convenient.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 13% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.0.4

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

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

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Drupal Microsoft Entra ID SSO Login to 1.0.4.

Affected software

Product	Affected	Fixed in
DrupalMicrosoft Entra ID SSO Login	Affected <1.0.4	Fixed in 1.0.4

AI-suggested

Organizations should prioritize updating the Microsoft Entra ID SSO Login module for Drupal to version 1.0.4 or later once it is released by the vendor, as this will contain the necessary patches to close the authentication bypass. If you cannot patch yet, administrators should consider temporarily disabling the affected SSO integration or implementing additional access controls and monitoring around authentication flows. Conduct thorough audits of authentication paths to identify and block any alternate channels that could be exploited. Employ multi-factor authentication (MFA) at the identity provider level to reduce the risk of unauthorized access even if the bypass is attempted. Monitor logs for unusual authentication attempts or privilege escalations, and implement network segmentation to limit the impact of compromised accounts. Engage with Drupal and Microsoft security advisories regularly to stay informed on updates. Finally, conduct penetration testing focused on SSO mechanisms to detect similar weaknesses proactively.

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Microsoft Entra ID SSO Login allows Privilege Escalation.This issue affects Microsoft Entra ID SSO Login: from 0.0.0 before 1.0.4.

Impact

For European organizations, especially those using Drupal CMS integrated with Microsoft Entra ID for SSO, this vulnerability poses a serious risk. Successful exploitation can lead to unauthorized access to sensitive data, administrative control over websites, and potential lateral movement within internal networks. This is particularly critical for sectors such as government, finance, healthcare, and critical infrastructure, where Drupal is commonly used for public-facing portals and intranet services. The breach of authentication mechanisms can compromise user data privacy, violate GDPR compliance, and damage organizational reputation. Moreover, attackers gaining elevated privileges could deploy further malware, exfiltrate data, or disrupt services, impacting business continuity. The lack of known exploits currently reduces immediate risk but does not diminish the urgency for mitigation, as threat actors may develop exploits rapidly once the vulnerability details are public. European organizations with complex identity federation setups relying on Microsoft Entra ID SSO are especially vulnerable due to the central role of authentication in their security posture.

CWE-288Authentication Bypass Using an Alternate Path or Channel (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product requires authentication, but the product has an alternate path or channel that does not require authentication.
Architecture and Design
Funnel all access through a single choke point to simplify how users can access a resource. For every access, perform a check to determine if the user has permissions to access the resource.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V1.2.3 (opens in a new tab)
V1.2.2 (opens in a new tab)
V1.2.4 (opens in a new tab)
Attack patterns
Directory Indexing (opens in a new tab)
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

drupal.org/sa-contrib-2026-005 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 4 Feb 2026, 21:01 UTC

WeaknessesCWE-288

Technical details

References

Community reviews

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