Open redirect: TikTok

calendar Sep 23, 2026  ยท
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Message contains use of an open redirect on TikTok. This has been exploited in the wild.

Sublime rule (View on GitHub)

 1name: "Open redirect: TikTok"
 2description: |
 3    Message contains use of an open redirect on TikTok. This has been exploited in the wild.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and any(body.links,
 9          .href_url.domain.root_domain == "tiktok.com"
10          and strings.icontains(.href_url.query_params, 'target=')
11          and strings.icontains(.href_url.query_params, 'aid=')
12  )
13  // attempt to remove any FPs sent by TikTok actual
14  and not (
15    sender.email.domain.root_domain in ("tiktok.com")
16    and headers.auth_summary.dmarc.pass
17  )
18  
19  // negate highly trusted sender domains unless they fail DMARC authentication
20  and not (
21    sender.email.domain.root_domain in $high_trust_sender_root_domains
22    and coalesce(headers.auth_summary.dmarc.pass, false)
23  )  
24attack_types:
25  - "Credential Phishing"
26  - "Malware/Ransomware"
27tactics_and_techniques:
28  - "Open redirect"
29detection_methods:
30  - "Sender analysis"
31  - "URL analysis"
32id: "d231d135-956c-5e6d-babe-71f847d29d1d"
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