CVE-2025-63020

MEDIUM

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Wayne Allen Postie postie allows Stored XSS.This issue affects Postie: from n/a through <= 1.9.73.

CVSS 3.16.5
EPSS0.2%
Percentile5th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, low privileges required, requires user interaction, can impact systems beyond the vulnerable component.
CWE Weakness Definitions
CWE-79: Cross-Site Scripting (XSS)

Attacker injects malicious scripts into web pages viewed by other users, executing in the victim's browser context.

Related Attack Patterns (CAPEC)
CAPEC-85 AJAX Footprinting
via CWE-79
CAPEC-209 XSS Using MIME Type Mismatch
via CWE-79
CAPEC-588 DOM-Based XSS
via CWE-79
CAPEC-591 Reflected XSS
via CWE-79
CAPEC-592 Stored XSS
via CWE-79
Show all 6
via CWE-79

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

A Stored Cross-Site Scripting (XSS) vulnerability exists in Wayne Allen Postie versions up to 1.9.73 due to improper neutralization of input during web page generation. This could allow an attacker to inject malicious scripts into the web application, which could be executed in the browser of other users.

BSID: BS-2025-GLOBAL-027029-M • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2025-63020?
A Stored Cross-Site Scripting (XSS) vulnerability exists in Wayne Allen Postie versions up to 1.9.73 due to improper neutralization of input during web page generation. This could allow an attacker to inject malicious scripts into the web application, which could be executed in the browser of other users.
What is the CVSS score for CVE-2025-63020?
CVE-2025-63020 has CVSS 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L. EPSS: 0.2%.
Is CVE-2025-63020 actively exploited?
No confirmed active exploitation of CVE-2025-63020 as of 2026-05-30.
How do I remediate CVE-2025-63020?
Priority: MEDIUM.
Vulnerability Details
CVE IDCVE-2025-63020
BSIDBS-2025-GLOBAL-027029-M BreachSpider Global ID
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Published2025-12-31
Last Modified2026-04-23
ICS Relevance0%
Weakness (CWE)
Cross-Site Scripting (XSS)
SourceNVD
Official Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Wayne Allen Postie postie allows Stored XSS.This issue affects Postie: from n/a through <= 1.9.73.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can exploit this vulnerability by submitting malicious scripts through input fields that are not properly sanitized. These scripts are then stored in the database and can be rendered in the browser of other users when they visit the affected pages.

Exploitation Likelihood: MEDIUM

Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 288 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Model/workspace/models/qwen2.5-coder-32b-instruct-bf16
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash0c2420f9cb6af979c8ddec9ca795b6de398f4b5ef746baf3253030f50aaa5f5364b3210d96d8dfe9615af29a03733e2d72d8245ddc4e6f9078c1d5fc5a9fab5c

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