CVE-2026-1406VulnerabilityPublished 25 Jan 2026Updated 23 Feb 2026

CVE-2026-1406: lcg0124 BootDo · Open Redirect

Affects lcg0124 BootDoSource CVE Database V5

Not known to be exploited · CVSS 5.1 Medium.

Data as of 26 Oct 2026, 07:57 UTC

CVSS 4.0 base score

5.1Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system 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 to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Jan 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 2026-10-26.

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
lcg0124BootDo	Affected =n/a	Fixed in–

AI-suggested

To mitigate CVE-2026-1406, organizations should implement strict validation and sanitization of all redirect parameters, especially the Hostname argument in the redirectToLogin function. This includes enforcing allowlists of trusted domains and rejecting or neutralizing any unrecognized or external URLs. Implementing relative URL redirects rather than absolute URLs can reduce risk. Organizations should monitor vendor communications for patches or updates addressing this vulnerability and apply them promptly given the rolling release model. Additionally, security teams should conduct code reviews and penetration testing focused on redirect handling in BootDo deployments. User education on phishing risks and suspicious links is also critical to reduce the impact of potential exploitation. Web application firewalls (WAFs) can be configured to detect and block suspicious redirect patterns. Logging and monitoring redirect requests can help identify exploitation attempts. Finally, consider implementing multi-factor authentication to mitigate the impact of credential theft resulting from phishing campaigns leveraging this vulnerability.

Description

A vulnerability was determined in lcg0124 BootDo up to 5ccd963c74058036b466e038cff37de4056c1600. Affected by this vulnerability is the function redirectToLogin of the file AccessControlFilter.java of the component Host Header Handler. This manipulation of the argument Hostname causes open redirect. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available.

Impact

The primary impact of CVE-2026-1406 is the facilitation of phishing and social engineering attacks by allowing attackers to redirect users from a legitimate BootDo-hosted URL to malicious external sites. This can lead to credential theft, malware distribution, or further exploitation of users. While the vulnerability does not directly compromise system confidentiality, integrity, or availability, it undermines user trust and can serve as a stepping stone for more severe attacks. Organizations relying on BootDo for access control or authentication workflows may see increased risk of user-targeted attacks. The remote exploitability and lack of required privileges increase the attack surface. However, the need for user interaction and the medium severity rating indicate that exploitation requires some user involvement and may not lead to immediate system compromise. The continuous update model means that unpatched instances could remain vulnerable if organizations do not promptly apply updates or implement mitigations. Overall, the vulnerability poses a moderate risk to organizations, particularly those with large user bases or sensitive authentication portals using BootDo.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 22:24 UTC

Technical details

References

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