CVE-2026-45090

Description

Dalfox has an Unauthenticated Remote DoS via Closed-Channel Write in `ParameterAnalysis` (server mode)

Description (MITRE) cveawg.mitre.org

Pulled from cveawg.mitre.org/api/cve/CVE-2026-45090 on 2026-07-28. Shown when MITRE's text differs from the cvelistV5 mirror.

Dalfox is a powerful open-source XSS scanner and utility focused on automation. Prior to 2.13.0, ParameterAnalysis in pkg/scanning/parameterAnalysis.go runs two sequential worker stages that both write to the same results channel. The channel is correctly closed after the first stage completes (close(results) at line 438), but the second stage — which processes POST-body parameters (dp) — is then launched with the same already-closed channel as its output. When a scanned parameter is reflected, processParams executes results <- paramResult on the closed channel, triggering a Go runtime panic that crashes the entire dalfox process. In server mode, the crash is remotely triggerable by any unauthenticated caller who can reach the REST API, because the default configuration has no API key and the second stage activates whenever options.Data != "" (i.e., the attacker supplies the data field) and the target reflects at least one parameter. This vulnerability is fixed in 2.13.0.

Overview

State

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Assigner (CNA)

—

CVSS severity

high

CVSS score

7.5 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Effective score

7.5 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

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Last updated

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Source

https://www.tenable.com/cve/CVE-2026-45090

Linked Threat

CVE-2026-45090 — CVE-2026-45090

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-32613

EUVD enrichment is queued; refresh the page in a few seconds.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (5)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://github.com/hahwul/dalfox/releases/tag/v2.13.0 tenable:github.com
• https://github.com/hahwul/dalfox/security/advisories/GHSA-2g4x-fq3j-cgq4 tenable:github.com
• https://www.first.org/epss/ tenable:www.first.org
• https://nvd.nist.gov/vuln/detail/CVE-2026-45090 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-45090 tenable:www.cve.org

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

• CISA Warns of Exploited Microsoft Defender 0-Day Flaws
  web:cyberpress.org

  The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .

  2026-05-26 02:52 UTC
• CISA Warns of Microsoft Defender 0-Day Vulnerabilities Exploited in Attacks
  web:cybersecuritynews.com

  CISA added two critical Microsoft Defender flaws to its KEV catalog, warning of active attacks that could escalate privileges.

  2026-05-26 02:52 UTC
• Microsoft Defender Vulnerabilities Added to CISA KEV (CVE-2026-41091 ...
  web:op-c.net

  CISA has added two Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities catalog following evidence of active exploitation. The vulnerabilities, tracked as CVE - 2026 -41091 and CVE - 2026 -45498, affect core Microsoft Defender components used to protect Windows endpoints. CISA added both vulnerabilities to KEV on May 20, 2026 , with a federal remediation due date of June 3, 2026 .

  2026-05-26 02:52 UTC
• Microsoft Patches Two Actively Exploited Defender Zero-Days on Windows
  web:windowsreport.com

  Microsoft patched two actively exploited Defender zero-days affecting Windows systems and security components.

  2026-05-26 02:52 UTC
• Microsoft warns of new Defender zero-days exploited in attacks
  web:www.bleepingcomputer.com

  On Wednesday, Microsoft started rolling out security patches for two Defender vulnerabilities that have been exploited in zero-day attacks.

  2026-05-26 02:52 UTC
• April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
  web:www.crowdstrike.com

  Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

  2026-05-26 02:52 UTC
• Microsoft Technical Security Notifications
  web:www.microsoft.com

  Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.

  2026-05-26 02:52 UTC
• Oracle Critical Patch Update Advisory - April 2026
  web:www.oracle.com

  This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

  2026-05-26 02:52 UTC
• Microsoft confirms two major Defender security issues - TechRadar
  web:www.techradar.com

  Microsoft patches two actively exploited zero‑day flaws in Defender, tracked as CVE‑2026‑41091 (privilege escalation) and CVE‑2026‑45498 (denial of service) Updates were shipped ...

  2026-05-26 02:52 UTC
• Patch Tuesday May 2026: Security Updates & CVE Analysis
  web:zecurit.com

  Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

  2026-05-26 02:52 UTC

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