CVE-2026-43897: CWE-918: Server-Side Request Forgery (SSRF) in OP-Engineering link-preview-js
CVE-2026-43897 is a high-severity Server-Side Request Forgery (SSRF) vulnerability in the OP-Engineering link-preview-js library versions prior to 4. 0. 1. The vulnerability arises because the library did not properly validate IPv6 loopback addresses and was susceptible to DNS attacks that could resolve addresses to internal IPs. This flaw could lead to internal data leaks by allowing unauthorized access to internal network resources. The issue is fixed in version 4. 0. 1 of the library.
AI Analysis
Technical Summary
The OP-Engineering link-preview-js library, used to extract information from web links, contained an SSRF vulnerability (CWE-918) before version 4.0.1. Specifically, it failed to check for IPv6 loopback addresses and was vulnerable to DNS resolution attacks that could map external addresses to internal IPs. This could allow attackers to cause the server to make unauthorized requests to internal network resources, potentially leaking sensitive internal data. The vulnerability has a CVSS 4.0 score of 8.7, indicating high severity. The issue is resolved in version 4.0.1 of the library.
Potential Impact
Exploitation of this SSRF vulnerability could allow an attacker to induce the server to make unauthorized requests to internal IP addresses, including IPv6 loopback addresses, potentially exposing sensitive internal data. This could lead to internal data leaks. There are no known exploits in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in link-preview-js version 4.0.1. Users of affected versions prior to 4.0.1 should upgrade to version 4.0.1 or later to remediate this issue. Patch status is not explicitly stated in the vendor advisory, but the description confirms the fix is included in 4.0.1. No additional mitigation steps are indicated.
CVE-2026-43897: CWE-918: Server-Side Request Forgery (SSRF) in OP-Engineering link-preview-js
Description
CVE-2026-43897 is a high-severity Server-Side Request Forgery (SSRF) vulnerability in the OP-Engineering link-preview-js library versions prior to 4. 0. 1. The vulnerability arises because the library did not properly validate IPv6 loopback addresses and was susceptible to DNS attacks that could resolve addresses to internal IPs. This flaw could lead to internal data leaks by allowing unauthorized access to internal network resources. The issue is fixed in version 4. 0. 1 of the library.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The OP-Engineering link-preview-js library, used to extract information from web links, contained an SSRF vulnerability (CWE-918) before version 4.0.1. Specifically, it failed to check for IPv6 loopback addresses and was vulnerable to DNS resolution attacks that could map external addresses to internal IPs. This could allow attackers to cause the server to make unauthorized requests to internal network resources, potentially leaking sensitive internal data. The vulnerability has a CVSS 4.0 score of 8.7, indicating high severity. The issue is resolved in version 4.0.1 of the library.
Potential Impact
Exploitation of this SSRF vulnerability could allow an attacker to induce the server to make unauthorized requests to internal IP addresses, including IPv6 loopback addresses, potentially exposing sensitive internal data. This could lead to internal data leaks. There are no known exploits in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in link-preview-js version 4.0.1. Users of affected versions prior to 4.0.1 should upgrade to version 4.0.1 or later to remediate this issue. Patch status is not explicitly stated in the vendor advisory, but the description confirms the fix is included in 4.0.1. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-04T16:11:33.085Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a028746cbff5d86108b50df
Added to database: 5/12/2026, 1:49:58 AM
Last enriched: 5/12/2026, 1:52:54 AM
Last updated: 5/12/2026, 3:53:07 AM
Views: 1
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