VulnerabilityPublished 12 May 2026

CVE-2026-41872: EPG "Kura Sushi Official App" for Android · Improper Certificate Validation

Affects EPG "Kura Sushi Official App" for AndroidSource CVE Database V5

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Not known to be exploited · CVSS 7.4 High.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.0 base score

7.4High

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

EPSS: 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
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: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
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: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to 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 12 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity 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
EPG, Inc."Kura Sushi Official App" for Android	Affected =from 2.0.11 to 3.9.10	Fixed in–
EPG, Inc."Kura Sushi Official App" for iOS	Affected =from 2.0.11 to 3.9.10	Fixed in–
Alpineandroid/jp.co.kura_corpo`pkg:apk/android/jp.co.kura_corpo`Other threats	Affected >=2.0.11 <=3.9.10	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until an official fix is available, users should exercise caution when using the affected app versions and avoid connecting over untrusted networks. Monitor for vendor updates regarding patches or mitigations.

Description

The "Kura Sushi Official App" for Android, developed by EPG, Inc. , has a vulnerability involving improper certificate validation. This flaw could allow a man-in-the-middle attacker to intercept or modify push notification communications between the app and its server. The vulnerability affects versions from 2.0.11 to 3.9.10. The CVSS score is 7.4, indicating a high severity risk.

Impact

Successful exploitation of this vulnerability could result in an attacker intercepting or modifying push notifications sent to the affected app, compromising the confidentiality and integrity of the communication. This could lead to unauthorized disclosure of sensitive information or manipulation of app behavior via altered notifications. There is no indication of impact on system availability. No known exploits have been reported in the wild.

Summary

CVE-2026-41872 describes a vulnerability in the "Kura Sushi Official App" for Android caused by improper certificate validation. This security weakness could enable an attacker to perform man-in-the-middle attacks on push notification traffic, potentially leading to eavesdropping or message alteration. The vulnerability affects app versions 2.0.11 through 3.9.10. The CVSS 3.0 base score is 7.4, reflecting high impact on confidentiality and integrity but no impact on availability.

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