VulnerabilityPublished 10 Feb 2026

CVE-2026-23688: SAP Fiori App (Manage Service Entry Sheets – Lean Services) · Missing Authorization

Affects SAP Fiori App (Manage Service Entry Sheets – Lean Services)Source CVE Database V5

Not known to be exploited · CVSS 4.3 Medium.

Data as of 26 Oct 2026, 09:16 UTC

CVSS 3.1 base score

4.3Medium

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: None
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: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
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: None: There is no loss of confidentiality within 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 10 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 26 Oct 2026.

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

Affected software

Product	Affected	Fixed in
SAP_SESAP Fiori App (Manage Service Entry Sheets - Lean Services)	Affected =103 =104 =105 =106 =107	Fixed in–

AI-suggested

European organizations should immediately review and tighten access controls around the SAP Fiori 'Manage Service Entry Sheets' app, ensuring that only authorized personnel have access consistent with their roles. Implement detailed logging and monitoring of service entry sheet activities to detect unusual or unauthorized modifications. Employ SAP's recommended security hardening guides and regularly audit user privileges to prevent privilege creep. Prepare for prompt deployment of SAP security patches once released by maintaining an up-to-date patch management process. Additionally, conduct user training to raise awareness about the risks of privilege escalation and enforce strict change management procedures for critical ERP components.

Description

CVE-2026-23688 is a medium severity vulnerability in the SAP Fiori App 'Manage Service Entry Sheets - Lean Services' that results from missing authorization checks. Authenticated users can escalate privileges due to the lack of proper authorization enforcement. The vulnerability impacts integrity but does not affect confidentiality or availability. It affects multiple versions of SAP S/4HANA Core (102 through 107). Exploitation requires authenticated access but no user interaction. There are no known exploits in the wild currently. European organizations using affected SAP versions should prioritize patching or implementing compensating controls to prevent unauthorized privilege escalation. This vulnerability is particularly relevant for countries with significant SAP enterprise deployments and critical infrastructure relying on SAP ERP systems. Mitigation involves strict access control reviews, monitoring for unusual privilege escalations, and applying SAP security updates once available.

Impact

For European organizations, this vulnerability poses a risk primarily to the integrity of business processes managed through SAP S/4HANA systems, particularly those using the affected Fiori app for service entry sheet management. Unauthorized privilege escalation could allow malicious insiders or compromised accounts to alter service records, leading to financial inaccuracies, fraud, or disruption of procurement and service management workflows. While confidentiality and availability are not directly impacted, the integrity compromise could have downstream effects on compliance, auditing, and operational reliability. Organizations in sectors with stringent regulatory requirements, such as finance, manufacturing, and public services, may face increased risk of non-compliance or reputational damage if such vulnerabilities are exploited. Given SAP's widespread adoption in Europe, especially in Germany, France, Italy, Spain, and the UK, the potential impact is significant. The absence of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once patches are released or if organizations delay remediation.

Summary

CVE-2026-23688 is a vulnerability classified under CWE-862 (Missing Authorization) affecting the SAP Fiori App 'Manage Service Entry Sheets - Lean Services' component within SAP S/4HANA Core versions 102 through 107. The flaw arises because the application does not perform necessary authorization checks for authenticated users, allowing them to escalate privileges beyond their assigned roles. This missing authorization means that a user with limited privileges could perform actions or access data reserved for higher privilege levels, compromising the integrity of the system's data or processes. The vulnerability does not impact confidentiality or availability, indicating that sensitive data exposure or denial of service are not concerns here. The CVSS v3.1 base score is 4.3 (medium severity), reflecting that the attack vector is network-based, requires low attack complexity, and requires privileges but no user interaction. No known exploits have been reported in the wild, and SAP has not yet released a patch at the time of this report. The vulnerability affects a critical business process module used for managing service entry sheets, which are essential for verifying and processing external service deliveries in enterprise resource planning (ERP) workflows. The lack of authorization checks could lead to unauthorized modification or creation of service entry sheets, potentially causing financial discrepancies or process manipulation.

CWE-862Missing Authorization (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #4OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries.
Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
OWASP Cheat Sheets
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.8 (opens in a new tab)
V13.4.2 (opens in a new tab)
V7.2.2 (opens in a new tab)
Attack patterns
Exploitation of Thunderbolt Protection Flaws (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 17 Feb 2026, 09:38 UTC

WeaknessesCWE-862

Technical details

References

Community reviews

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