CVE-2025-15455VulnerabilityPublished 5 Jan 2026Updated 23 Feb 2026

CVE-2025-15455: bg5sbk MiniCMS · Improper Authentication

Affects bg5sbk MiniCMSSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 4.0 base score

6.9Medium

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

EPSS: 0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: Low
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
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: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to 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 5 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 2026-10-25.

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

Affected software

Product	Affected	Fixed in
bg5sbkMiniCMS	Affected =1.0 =1.1 =1.2 =1.3 =1.4 =1.5 =1.6 =1.7 =1.8	Fixed in–
GitHubbg5sbk/MiniCMS`pkg:github/bg5sbk/MiniCMS`Other threats	Affected =1.0 =1.1 =1.2 =1.3 =1.4 =1.5 =1.6 =1.7 =1.8	Fixed in–

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AI-suggested

1. Immediately restrict access to the MiniCMS administrative interface by implementing IP whitelisting or VPN-only access to reduce exposure to remote attackers. 2. Deploy web application firewalls (WAFs) with custom rules to detect and block requests targeting the delete_page function or suspicious URL patterns related to /minicms/mc-admin/page.php. 3. Monitor web server and application logs for unusual deletion requests or repeated access attempts to the vulnerable endpoint. 4. If possible, disable or remove the delete_page functionality temporarily until a vendor patch or official fix is available. 5. Conduct a thorough inventory of all MiniCMS instances and upgrade to a patched version once released or consider migrating to a more secure CMS platform. 6. Implement regular backups of website content to enable rapid restoration in case of unauthorized deletions. 7. Educate administrators and developers about the vulnerability and encourage vigilance against suspicious activity. 8. Engage with the vendor or community to track patch releases and security advisories related to MiniCMS.

Description

A flaw has been found in bg5sbk MiniCMS up to 1.8. Impacted is the function delete_page of the file /minicms/mc-admin/page.php of the component File Recovery Request Handler. This manipulation causes improper authentication. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

The primary impact of CVE-2025-15455 is unauthorized deletion of website pages, which compromises the integrity and availability of affected web properties. Organizations relying on MiniCMS versions 1.0 to 1.8 face risks including content loss, website defacement, disruption of services, and potential reputational damage. Since the vulnerability requires no authentication and no user interaction, attackers can automate exploitation at scale, increasing the likelihood of widespread attacks once exploits are integrated into attack toolkits. This can lead to denial of service conditions for website visitors and administrative overhead for recovery and remediation. The absence of vendor patches exacerbates the risk, forcing organizations to rely on compensating controls. Additionally, attackers could leverage this vulnerability as a foothold for further attacks if combined with other vulnerabilities or misconfigurations. Overall, the vulnerability poses a moderate but tangible threat to organizations using the affected CMS versions, especially those with public-facing websites critical to business operations.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 23 Feb 2026, 23:06 UTC

Technical details

References

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