Cyber Resilience

CVE-2025-24617

High

Published: 14 February 2025

Published
14 February 2025
Modified
23 April 2026
KEV Added
—
Patch
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CVSS Score v3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
EPSS Score 0.0024 47.7th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-24617 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Browser Session Hijacking (T1185); ranked at the 47.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).

Deeper analysis

CVE-2025-24617 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-Site Scripting (XSS) under CWE-79, affecting the AcyMailing SMTP Newsletter WordPress plugin developed by AcyMailing Newsletter Team. The issue impacts all versions prior to 9.11.1, with a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating high severity due to its network accessibility and scope change.

Unauthenticated attackers (PR:N) can exploit this vulnerability over the network (AV:N) with low complexity (AC:L) by tricking users into interacting with a maliciously crafted link or input (UI:R). Successful exploitation leads to reflected XSS, executing arbitrary scripts in the victim's browser within the context of the affected site (S:C), potentially resulting in low-impact confidentiality, integrity, and availability effects, such as session hijacking, data theft, or phishing within the site's privileges.

Patchstack advisories detail the vulnerability in the AcyMailing WordPress plugin and recommend updating to version 9.11.1 or later to mitigate the Reflected XSS issue, as referenced in their database entry.

EU & UK References

Vulnerability details

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in AcyMailing Newsletter Team AcyMailing SMTP Newsletter acymailing allows Reflected XSS.This issue affects AcyMailing SMTP Newsletter: from n/a through < 9.11.1.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1185 Browser Session Hijacking Collection
Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.
attack.mitre.org →
Why these techniques?

Reflected XSS enables arbitrary JavaScript execution in the victim's browser context, directly facilitating session hijacking and related browser-based credential theft as described in the CVE impact.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-25203Shared CWE-79
CVE-2025-67959Shared CWE-79
CVE-2025-68835Shared CWE-79
CVE-2026-32118Shared CWE-79
CVE-2026-30934Shared CWE-79
CVE-2026-24833Shared CWE-79
CVE-2024-56038Shared CWE-79
CVE-2025-25823Shared CWE-79
CVE-2025-36548Shared CWE-79
CVE-2025-69392Shared CWE-79

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

SI-2 requires identification, reporting, and correction of system flaws, directly mitigating this reflected XSS vulnerability by patching the AcyMailing plugin to version 9.11.1 or later.

SI-15 Information Output Filtering good match
prevent

SI-15 mandates filtering of information output to block malicious scripts, comprehensively preventing reflected XSS execution in victims' browsers.

SI-10 Information Input Validation good match
prevent

SI-10 enforces information input validation at critical points, addressing the improper neutralization of input that enables this reflected XSS attack.

References