VulnSocial

CVE-2026-5357Disclosure

LOWCVSS 6.4 · MEDIUM

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sid' parameter of the 'wpdm_members' shortcode in versions up to and including 3.3.52. This is due to insufficient input sanitization and output escaping on the user-supplied 'sid' shortcode attribute. The sid parameter is extracted without sanitization in the members() function and stored via update_post_meta(), then echoed directly into an HTML id attribute in the members.php template without applying esc_attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the injected page.

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1.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Public PoC is present in monitored signal
  • 4 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 2d ago at 2 mentions (2026-04-09); latest day: 1
  • 4 total mentions across 3 days

Deep dive

Activity timeline4 mentions / 3d
01122Mentions · 2026-04-09: 2Mentions · 2026-04-10: 1Mentions · 2026-04-19: 1PoC Mentioned / Linked · 2026-04-19: 1Technical Details · 2026-04-09: 204-0904-1004-19
Signal classification3 categories
Disclosure
250.0%
General
125.0%
PoC
125.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-04-092
Disclosure2
2026-04-101
General1
2026-04-191
PoC1
Full discourse4 posts
  • Atomic Edge@atomicedgeWAF
    PoC

    https://atomicedge.io/cve-proof/cve-2026-5357-download-manager-version-3-3-52-medium-vulnerability-proof-of-concept CVE-2026-5357 #WordPress plugin #vulnerability download-manager #cybersecurity #wordpressfirewall #wordpresssecurity #hacking #wpsecurity #atomicedge

    Post summary

    The post links to a proof-of-concept for CVE-2026-5357 targeting WordPress's download-manager plugin version 3.3.52, with no evidence of active exploitation, patches, or detailed technical specifics.

    0000064
    6 followersView on X
  • CVEarity@CVEarity
    General

    ⚡ New CVE Alert: CVE-2026-5357 📊 Severity: 6.4 🚨 Risk Level: Medium 🧩 Affects: Wordpress Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-5357 #CVE-2026-5357 #CVE #Medium #Wordpress #CyberSecurity #InfoSec https://t.co/CynZFRIUdn

    Post summary

    The tweet merely announces CVE-2026-5357 with its severity rating and a link to the NVD, providing no deeper technical, exploit, or mitigation information.

    0000032
    123 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-5357 The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sid' parameter of the 'wpdm_members' shortcode in versions up to and inc… https://www.cve.org/CVERecord?id=CVE-2026-5357 ----- Traducción: CVE-2026-5357 El … http://infoflow.cloud`

    Post summary

    The tweet reports CVE‑2026‑5357, a stored XSS flaw in the WordPress Download Manager plugin, providing technical details but no proof of concept, exploit code, or evidence of active exploitation.

    0000035
    67 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-5357 The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sid' parameter of the 'wpdm_members' shortcode in versions up to and inc… https://www.cve.org/CVERecord?id=CVE-2026-5357

    Post summary

    The text announces a Stored XSS vulnerability in the Download Manager WordPress plugin, identified as CVE-2026-5357, but does not provide any PoC, exploit, or patch information.

    00000173
    57.0K followersView on X

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