Redirect restriction bypass via dropped option propagation
Published May 5, 2025 · Updated May 5, 2025
Redirect filtering in Misskey Project summaly 3.0.1 through 5.2.0 allows remote attackers to force retrieval of redirect targets. The main summaly function creates scrapingOptions without copying followRedirects, so plugins and the default summarizer use redirect-enabled requests. A consuming service must accept an attacker-controlled URL while disabling redirects; the returned preview still reflects the redirect destination.
Summary
What happened
Redirect filtering in Misskey Project summaly 3.0.1 through 5.2.0 allows remote attackers to force retrieval of redirect targets. The main summaly function creates scrapingOptions without copying followRedirects, so plugins and the default summarizer use redirect-enabled requests. A consuming service must accept an attacker-controlled URL while disabling redirects; the returned preview still reflects the redirect destination.
The record
- CVE
- CVE-2025-46553
- Published
- May 5, 2025
- Updated
- May 5, 2025
- Vendor
- Misskey Project
- Product
- summaly
- Classifications
- CWE-665, CWE-693, CWE-601, CWE-664, CWE-669, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 5, 2025CVE publishedPublication date reported by the CVE source.
- May 5, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>= 3.0.1, < 5.2.1
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
- Vendor advisory redirect proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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