VulnerabilityPublished 17 Dec 2025

CVE-2023-53907: Bludit Backup Plugin · Path Traversal

Affects Bludit Backup PluginSource CVE Database V5

Not known to be exploited · CVSS 7.1 High : upgrade to 3.13.1 soon.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 4.0 base score

7.1High

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

EPSS: 0.8% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.13.1

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

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

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: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: High: There is a total loss of confidentiality, resulting in all information within the Vulnerable System being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.
Vulnerable system integrity: None: There is no loss of integrity within 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.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Dec 2025
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 Bludit Backup Plugin to 3.13.1.

Affected software

Product	Affected	Fixed in
Bludit Backup Plugin	Affected =3.13.1 <3.13.1	Fixed in 3.13.1

AI-suggested

European organizations should immediately update the Bludit CMS Backup Plugin to version 3.13.1 or later, where the vulnerability is fixed. If immediate patching is not feasible, restrict access to the Backup Plugin functionality to trusted administrators only, using web application firewalls (WAFs) or access control lists (ACLs). Implement strict authentication and authorization controls to limit user privileges and monitor for unusual file download requests indicative of path traversal attempts. Employ logging and alerting on file access patterns to detect exploitation attempts early. Conduct regular security audits of CMS plugins and configurations to identify and remediate similar vulnerabilities. Additionally, consider isolating CMS instances in segmented network zones to limit the impact of potential breaches. Educate users on secure credential management to reduce the risk of unauthorized authenticated access. Finally, maintain up-to-date backups and incident response plans to quickly recover from any compromise.

Description

Bludit versions before 3.13.1 contain an authenticated file download vulnerability in the Backup Plugin that allows logged-in users to access arbitrary files. Attackers can exploit the plugin's download functionality by manipulating file path parameters to read sensitive system files through directory traversal.

Impact

For European organizations, this vulnerability could lead to unauthorized disclosure of sensitive information such as system credentials, configuration files, or proprietary data stored on web servers running vulnerable Bludit CMS instances. This can facilitate further attacks like privilege escalation, lateral movement, or data breaches. Small and medium enterprises, educational institutions, and local government websites using Bludit are particularly at risk due to potentially limited security monitoring and patch management. The breach of confidentiality could result in regulatory non-compliance under GDPR, leading to financial penalties and reputational damage. Additionally, attackers could leverage exposed information to compromise other internal systems or launch targeted attacks. The vulnerability's exploitation requires only authenticated access, which may be easier to obtain via phishing or credential stuffing, increasing the risk. Although no active exploitation is reported, the high severity and ease of exploitation warrant immediate attention to prevent potential incidents.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 25 Dec 2025, 00:07 UTC

Technical details

References

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