CVE-2018-16604
CVE-2018-16604 is a high-severity vulnerability in Nibbleblog with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v2: 6.5
- EPSS exploit prediction: 2% (72nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-94
- Affected product: Nibbleblog
- Published:
- Last modified:
Description
An issue was discovered in Nibbleblog v4.0.5. With an admin's username and password, an attacker can execute arbitrary PHP code by changing the username because the username is surrounded by double quotes (e.g., "${phpinfo()}").
Frequently asked questions
- What is CVE-2018-16604?
- An issue was discovered in Nibbleblog v4.0.5. With an admin's username and password, an attacker can execute arbitrary PHP code by changing the username because the username is surrounded by double quotes (e.g., "${phpinfo()}").
- How severe is CVE-2018-16604?
- CVE-2018-16604 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-16604 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-16604?
- CVE-2018-16604 affects Nibbleblog. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-16604?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-16604 published?
- CVE-2018-16604 was published on 2018-09-06 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nibbleblog:nibbleblog:4.0.5:*:*:*:*:*:*:*
More vulnerabilities in Nibbleblog
- CVE-2019-7719 — Critical (CVSS 9.8): Nibbleblog 4.0.5 allows eval injection by placing PHP code in the install.php username parameter and then making a…
- CVE-2020-23356 — High (CVSS 7.5): dmin/kernel/api/login.class.phpin in nibbleblog v3.7.1c allows type juggling for login bypass because == is used…
- CVE-2015-6966 — Medium (CVSS 6.8): Multiple cross-site request forgery (CSRF) vulnerabilities in Nibbleblog before 4.0.5 allow remote attackers to hijack…
- CVE-2015-6967 — Medium (CVSS 6.5): Unrestricted file upload vulnerability in the My Image plugin in Nibbleblog before 4.0.5 allows remote administrators…
- CVE-2018-6470 — Medium (CVSS 5.3): Nibbleblog 4.0.5 on macOS defaults to having .DS_Store in each directory, causing DS_Store information to leak.
- CVE-2014-8996 — Medium (CVSS 4.3): Multiple cross-site scripting (XSS) vulnerabilities in Nibbleblog before 4.0.2 allow remote attackers to inject…
All CVEs affecting Nibbleblog →
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- CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.