CVE-2023-27040
Simple Image Gallery Web App Project Simple Image Gallery Web App 1.0
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-27040 is a critical-severity Injection (CWE-74) vulnerability in Simple Image Gallery Web App Project Simple Image Gallery Web App. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 20% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Simple Image Gallery version 1.0 contains a remote code execution vulnerability that is triggered through the username parameter. The flaw is tracked as CVE-2023-27040, carries a CVSS v3.1 score of 9.8, and is associated with CWE-74. The affected component allows unauthenticated network access to execute arbitrary code on the server.
An attacker with no credentials or user interaction can supply a crafted username value over the network to achieve full system compromise, including the ability to read, modify, or delete data and execute commands. Public exploit code for this issue has been available on Exploit-DB since shortly after disclosure.
The EPSS score for the vulnerability rose from a low baseline to a peak of 0.0732 on 2025-01-22 before receding to its current value of 0.0362, indicating a period of increased exploitation interest well after the original publication date. No vendor advisory or patch information is referenced in the available sources.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-30829
Vulnerability Data
Simple Image Gallery v1.0 was discovered to contain a remote code execution (RCE) vulnerability via the username parameter.
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Developer assessments and testing (including injection-focused techniques) identify improper neutralization of special elements, and the verifiable flaw remediation corrects them pre-deployment.
Identifies indicators of injection attacks (command, SQL, LDAP, etc.) via anomaly and attack monitoring.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Logging supports detection of injection attempts but does not prevent the weakness.
Monitoring activities can identify active injection attacks after they occur.
A.8.25 mandates a secure SDLC process that includes secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training to reduce injection flaws, but does not itself enforce or guarantee neutralization of special elements at runtime.
Application security requirements explicitly call for controls against injection attacks in software design.
A.8.27 mandates security-by-design principles (including distrust external input, data validation/sanitization, secure architecture layers, and design reviews against attack patterns) that reach injection when applied to output construction; this stops exploitation for a minority slice (e.g. where principles drive sanitization) but leaves most code-level injection defects untouched without further implementation rigor.
Secure coding standards require proper neutralization of special elements, directly addressing CWE-74.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-74, a class-level weakness, and none of its children carries one either.