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Download Monitor <= 5.2.10 - Unauthenticated Stored Cross-Site Scripting via Cross-Origin postMessage to Admin Editor

Priority LOW 31CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Download Monitor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Cross-Origin postMessage to Admin Editor in all versions up to, and including, 5.2.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the attacker to trick an authenticated Administrator into visiting an attacker-controlled page that targets an open Download edit screen, after which the payload is persisted unfiltered via the Administrator's unfiltered_html capability and later emitted verbatim to the frontend by the [download_data] shortcode's unescaped post_content render path.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00307 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wpchillDownload Monitorup to 5.2.10—No fix listedCNA
  • Download Monitor Vendorwpchill Affected up to 5.2.10 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:wpchill:download_monitor:*:*:*:*:*:*:*:*——wpchill
  • cpe:2.3:a:wpchill:download_monitor:*:*:*:*:*:*:*:* Versions — — ·wpchill

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100182
  2. 2026-10-03 Alias added: GHSA-377g-82j6-34xp

References

  • TI-2020-18879 Epsilon Framework Themes (Various Versions) - Function Injection CVSS 3.1CRITICAL 9.8
  • TI-2021-07068 Download Monitor < 4.4.5 - Admin+ SQL Injection CVSS 3.1HIGH 7.2
  • TI-2022-22320 WordPress Download Monitor Plugin <= 4.7.60 is vulnerable to Sensitive Data Exposure CVSS 3.1HIGH 7.5
  • TI-2024-03458 Image Photo Gallery Final Tiles Grid < 3.6.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 6.8
  • TI-2021-05950 WordPress Download Monitor plugin <= 4.4.6 - Auth. Stored Cross-Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 4.8
  • TI-2026-03090 Kali Forms <= 2.4.9 - Unauthenticated Remote Code Execution via form_process CVSS 3.1CRITICAL 9.8
See all 141 →

Sources