Cryptographic flaw in HackerOne mystem3 node module
Priority LOW 39CWE-311Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-311.
Summary
mystem3 is a NodeJS wrapper for the Yandex MyStem 3. mystem3 downloads binary resources over HTTP, which leaves it vulnerable to MITM attacks. It may be possible to cause remote code execution (RCE) by swapping out the requested binary with an attacker controlled binary if the attacker is on the network or positioned in between the user and the remote server.
Why it matters now
EPSS 0.01656 76th percentileScored 2026-11-07
Fix Fixed mystem3 (npm): 1.0.8
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| HackerOne | mystem3 node module | All versions | — | No fix listed | CNA |
| — | mystem3 (npm) | before 1.0.8 | 1.0.8 | Patch available | GHSA-747p-jfqv-f43r |
- mystem3 node module VendorHackerOne Affected All versions Fixed in — No fix listed CNA
- mystem3 (npm) Vendor— Affected before 1.0.8 Fixed in 1.0.8 Patch available GHSA-747p-jfqv-f43r
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mystem3_project:mystem3:*:*:*:*:*:node.js:*:* | up to 1.0.7 | Vulnerable | Mystem3 Project |
- cpe:2.3:a:mystem3_project:mystem3:*:*:*:*:*:node.js:*:* Versions up to 1.0.7 Vulnerable ·Mystem3 Project
Remediation
- Fix · GHSA-747p-jfqv-f43r mystem3 (npm) Fixed in 1.0.8 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2016-10626
- 2026-10-03 Alias added: GHSA-747p-jfqv-f43r
References
Sources
- CVE-2016-10626 · CVE Program
- CVE-2016-10626 · NVD
- FIRST EPSS
- GHSA-747p-jfqv-f43r · GitHub Advisory Database · CC BY 4.0
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