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Missing Facebook Marketing Message on ArcBlock Earn Activities

JM “cryptotestnet” Morales
Programs
join-to-earnbugneed-review

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On https://community.arcblock.io/earn/?locale=en, when sharing activities, Facebook posts do not include a marketing message. Other platforms such as Twitter, Telegram, and Reddit display the expected marketing message.

Steps to Reproduce:

  1. Open https://community.arcblock.io/earn/?locale=en.
  2. Select an activity and choose to share.
  3. Compare share options across Twitter, Telegram, Reddit, and Facebook.
  4. Observe that Facebook posts have no marketing message.

Expected Result:

  • Shared activities on Facebook should include a marketing message similar to other platforms (e.g., promo text, hashtags, campaign info).

Actual Result:

  • On Facebook, shared content only shows the link without any marketing message.

Bug Description: This appears to be an issue with Facebook Open Graph meta tags or the share configuration for Facebook. Unlike other platforms, the required og:title and og:description may be missing or improperly set.

Impact:

  • Reduces campaign visibility and engagement on Facebook.
  • Marketing campaigns lose consistency across platforms.
  • May decrease user motivation to share via Facebook.

Weakness:

  • CWE-451: User Interface Inconsistency (different behavior across platforms).
  • CWE-640: Weak Social Media Integration (if platform-specific config missing).

Proof of Concept (PoC):

  1. Go to the Earn page and click Share to Facebook.
  2. Notice: only the link appears, no marketing message.
  3. Compare with Twitter/Telegram/Reddit share – marketing message is present.

Severity Classification:

  • Severity Level: 🟠 Medium
  • CVSS v3.1 Base Score (Estimated): 4.8 (Medium – impacts marketing & user engagement but not core functionality).
  • Business Impact:
    • Reduced visibility of ArcBlock promotions on Facebook.
    • Lower community engagement and missed growth opportunities.

Suggested Fix:

  • Verify Facebook Open Graph meta tags (og:title, og:description****) are properly set for Earn activity pages.
  • Ensure Facebook share API integration includes a default marketing message.
  • Align Facebook sharing behavior with Twitter, Telegram, and Reddit.

Priority: ⚡ Medium – should be fixed to ensure consistent marketing reach across all platforms.

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