VulnerabilityPublished 4 Feb 2026

CVE-2026-25523: OpenMage magento-lts · Information Exposure

Affects OpenMage magento-ltsSource CVE Database V5

Not known to be exploited · CVSS 5.3 Medium : upgrade to 20.16.1 when convenient.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score

5.3Medium

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

EPSS: 0.3% chance of exploitation in 30 days – higher than 25% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 20.16.1

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
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: None: There is no loss of integrity within 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 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 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

Upgrade magento-lts and openmage/magento-lts to 20.16.1.

Affected software

Product	Affected	Fixed in
OpenMagemagento-lts	Affected <20.16.1	Fixed in 20.16.1
GitHubopenmage/magento-lts`pkg:github/openmage/magento-lts`Other threats	Affected <20.16.1	Fixed in 20.16.1

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

AI-suggested

The primary mitigation is to upgrade all OpenMage magento-lts installations to version 20.16.1 or later, where the vulnerability has been patched. Organizations should audit their Magento deployments to identify versions in use and prioritize patching accordingly. In addition to patching, network-level controls should be implemented to restrict access to the admin URL, such as IP whitelisting, VPN access, or web application firewalls (WAFs) configured to block suspicious requests manipulating the X-Original-Url header. Monitoring HTTP request logs for unusual or malformed X-Original-Url headers can help detect exploitation attempts. Security teams should also enforce strong authentication mechanisms on admin panels, including multi-factor authentication (MFA), to mitigate risks if the admin URL is discovered. Regular security assessments and penetration testing should include checks for information disclosure via HTTP headers. Finally, organizations should review and harden their web server and proxy configurations to ensure headers like X-Original-Url cannot be abused to reveal sensitive endpoints.

Description

Magento-lts is a long-term support alternative to Magento Community Edition (CE). Prior to version 20.16.1, the admin url can be discovered without prior knowledge of it's location by exploiting the X-Original-Url header on some configurations. This issue has been patched in version 20.16.1.

Impact

For European organizations, the exposure of the Magento admin URL can increase the risk of targeted attacks against their e-commerce platforms. Attackers gaining knowledge of the admin URL can attempt credential stuffing, brute force attacks, or exploit other vulnerabilities in the admin interface, potentially leading to unauthorized access, data theft, or disruption of services. Given the widespread use of Magento and its forks like OpenMage in European e-commerce, especially in countries with mature online retail sectors, this vulnerability could facilitate initial reconnaissance stages of cyberattacks. While the vulnerability itself does not allow direct compromise, it lowers the barrier for attackers to identify critical administrative endpoints. This can be particularly impactful for small to medium enterprises that may lack advanced security monitoring or network segmentation. Additionally, exposure of admin URLs could contravene data protection best practices under GDPR if it leads to unauthorized access or data breaches. Therefore, the vulnerability poses a moderate risk to confidentiality and operational security of affected European organizations.

CWE-200Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)
Class weaknessLikelihood of exploit: HighCWE Top 25 (2025): #20OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Error Handling (opens in a new tab)
Logging (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V8.3.4 (opens in a new tab)
V14.3.3 (opens in a new tab)
V7.3.3 (opens in a new tab)
Attack patterns
Subverting Environment Variable Values (opens in a new tab)
ICMP Echo Request Ping (opens in a new tab)
TCP SYN Scan (opens in a new tab)
Enumerate Mail Exchange (MX) Records (opens in a new tab)
DNS Zone Transfers (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 4 Feb 2026, 21:44 UTC

WeaknessesCWE-200

Technical details

References

Community reviews

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