CVE-2025-5405VulnerabilityPublished 1 Jun 2025

CVE-2025-5405: chaitak-gorai Blogbook · Cross Site Scripting

Affects chaitak-gorai BlogbookSource 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: 0.3% chance of exploitation in 30 days – higher than 28% 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

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

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.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 1 Jun 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 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

AI-suggested

Given the absence of an official patch, European organizations should implement immediate compensating controls. These include: 1) Applying strict input validation and output encoding on all comment-related fields at the web application or web server level to neutralize malicious scripts. 2) Employing a Web Application Firewall (WAF) configured to detect and block typical XSS payloads targeting comment parameters. 3) Enforcing Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 4) Educating users and administrators about the risks of clicking on suspicious links or interacting with untrusted comments. 5) Monitoring logs for unusual activity related to comment submissions and user sessions. 6) Considering temporary disabling or restricting comment functionality until a vendor patch or update is available. Organizations should also maintain close monitoring of vendor communications for updates and apply patches promptly once released.

Description

A vulnerability, which was classified as problematic, has been found in chaitak-gorai Blogbook up to 92f5cf90f8a7e6566b576fe0952e14e1c6736513. This issue affects some unknown processing of the file /post.php. The manipulation of the argument comment_author/comment_email/comment_content leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The vendor was contacted early about this disclosure but did not respond in any way.

Impact

For European organizations using chaitak-gorai Blogbook, this vulnerability poses a moderate risk primarily to web application security. Exploitation could allow attackers to execute arbitrary JavaScript in the browsers of site visitors or administrators, leading to theft of session cookies, user impersonation, or distribution of malware. This can damage organizational reputation, lead to data breaches involving user information, and disrupt normal operations. Since the vulnerability requires user interaction, phishing or social engineering campaigns could be used to increase success rates. Organizations in sectors with high public interaction such as media, education, or government websites using Blogbook may face increased exposure. Additionally, compliance with GDPR and other data protection regulations could be impacted if personal data is compromised through this vulnerability, resulting in legal and financial consequences.

Summary

CVE-2025-5405 is a cross-site scripting (XSS) vulnerability identified in the chaitak-gorai Blogbook software, specifically affecting the processing of user-supplied input parameters comment_author, comment_email, and comment_content in the /post.php file. The vulnerability arises because these input parameters are not properly sanitized or escaped before being rendered in the web interface, allowing an attacker to inject malicious scripts. This flaw can be exploited remotely without authentication, requiring only user interaction (e.g., a victim clicking a crafted link or viewing a malicious comment). The vulnerability is classified as 'problematic' with a CVSS 4.0 base score of 5.1 (medium severity), indicating moderate risk. Although no known exploits are currently reported in the wild, public disclosure of the exploit code increases the risk of exploitation. The vulnerability impacts the confidentiality and integrity of users by enabling script execution in the context of the vulnerable site, potentially leading to session hijacking, defacement, or redirection to malicious sites. The lack of vendor response and patch availability increases the urgency for users to implement mitigations.

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 9 Jul 2025, 12:58 UTC

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