@misskey-dev/summaly Redirect Filter Bypass
Priority MEDIUM 50CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Spoofing, Security bypass
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-601 and CWE-693.
Summary
@misskey-dev/summaly is a tool for getting a summary of a web page. Starting in version 3.0.1 and prior to version 5.2.1, a logic error in the main `summaly` function causes the `allowRedirects` option to never be passed to any plugins, and as a result, isn't enforced. Misskey will follow redirects, despite explicitly requesting not to. Version 5.2.1 contains a patch for the issue.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00264 18th percentileScored 2026-11-07
Fix Fixed summaly (misskey-dev): 5.2.1@misskey-dev/summaly (npm): 5.2.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| misskey-dev | summaly | 3.0.1 to before 5.2.1 | 5.2.1 | Patch available | CNA |
| — | @misskey-dev/summaly (npm) | 3.0.1 to before 5.2.1 | 5.2.1 | Patch available | GHSA-7899-w6c4-vqc4 |
- summaly Vendormisskey-dev Affected 3.0.1 to before 5.2.1 Fixed in 5.2.1 Patch available CNA
- @misskey-dev/summaly (npm) Vendor— Affected 3.0.1 to before 5.2.1 Fixed in 5.2.1 Patch available GHSA-7899-w6c4-vqc4
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:misskey:summaly:*:*:*:*:*:node.js:*:* | 3.0.1 to before 5.2.1 | Vulnerable | misskey-dev |
- cpe:2.3:a:misskey:summaly:*:*:*:*:*:node.js:*:* Versions 3.0.1 to before 5.2.1 Vulnerable ·misskey-dev
Remediation
- Fix · CNA summaly (misskey-dev) Fixed in 5.2.1
- Fix · GHSA-7899-w6c4-vqc4 @misskey-dev/summaly (npm) Fixed in 5.2.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-46553
- 2026-10-03 Alias added: GHSA-7899-w6c4-vqc4
References
Sources
- CVE-2025-46553 · CVE Program
- CVE-2025-46553 · NVD
- FIRST EPSS
- GHSA-7899-w6c4-vqc4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences