User redirection via URL parser mismatch
Published Aug 20, 2025 · Updated Aug 20, 2025
Open redirect in Hack@UCF OnboardLite before commit 6cca19e allows remote attackers to send users to malicious sites through crafted links. The /discord/new endpoints parse the redir parameter with urllib.parse.urlparse and accept an empty netloc, while browsers normalize slash-heavy URLs to an external host. Exploitation requires a user to visit the crafted trusted-domain link, enabling phishing, credential theft, or malware delivery through the attacker-controlled destination.
Summary
What happened
Open redirect in Hack@UCF OnboardLite before commit 6cca19e allows remote attackers to send users to malicious sites through crafted links. The /discord/new endpoints parse the redir parameter with urllib.parse.urlparse and accept an empty netloc, while browsers normalize slash-heavy URLs to an external host. Exploitation requires a user to visit the crafted trusted-domain link, enabling phishing, credential theft, or malware delivery through the attacker-controlled destination.
The record
- CVE
- CVE-2025-55751
- Published
- Aug 20, 2025
- Updated
- Aug 20, 2025
- Vendor
- Hack@UCF
- Product
- OnboardLite
- Classifications
- CWE-601, T1204.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 20, 2025CVE publishedPublication date reported by the CVE source.
- Aug 20, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 6cca19ea4f47af125caa08ef82594844f039e07e
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Crafted slash-heavy redir URLproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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