Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-39676 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Fieldthemes Fieldpopupnewsletter. Its CVSS base score is 6.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Protocol or Service Impersonation (T1001.003); ranked in the top 27% 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.
The FieldPopupNewsletter Prestashop Module version 1.0.0 is affected by a reflected cross-site scripting vulnerability (CWE-79) that resides in the callback parameter processed by ajax.php. The issue carries a CVSS 3.1 base score of 6.1 and permits an unauthenticated remote attacker to supply arbitrary JavaScript that is reflected back to a victim’s browser.
An attacker can exploit the flaw by crafting a malicious link containing a script in the callback parameter and persuading a user to click it. Successful exploitation executes the attacker’s code in the context of the Prestashop site, enabling theft of cookies, session tokens, or other client-side actions without requiring authentication.
Public references consist of technical write-ups published on blog.sorcery.ie that describe the discovery; no vendor advisory, patch release, or official mitigation guidance appears among the listed sources. The associated EPSS scores remain low, with a current value of 0.0526 and a peak of 0.0613, indicating limited observed exploitation interest to date.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-43377
Vulnerability Data
FieldPopupNewsletter Prestashop Module v1.0.0 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via the callback parameter at ajax.php.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.1.2V1.3.2
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.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly target introduction of XSS via coding standards/testing (mostly), yet the single broad outcome leaves many specific neutralization vectors unaddressed (partial).
Patching and EOL replacement can remediate known XSS instances in libraries or frameworks (partial) but do nothing to enforce input neutralization in application code (none).
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.
A.5.6 only promotes membership in groups to improve knowledge, receive alerts, and share information; it performs no action that stops XSS exploitation (or even the underlying neutralization defect) and is a pure dependency for other controls per the owner's labeling rule.