OP-Engineering link-preview-js up to 4.0.0 Link Preview server-side request forgery

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in OP-Engineering link-preview-js up to 4.0.0. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Link Preview Handler. Performing a manipulation results in server-side request forgery. This vulnerability is identified as CVE-2026-43897. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in OP-Engineering link-preview-js up to 4.0.0. This affects an unknown function of the component Link Preview Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Link Preview JS extracts web links information. Prior to 4.0.1, the library did not check for IPv6 loopback attacks. There was also a DNS attack, where an address could be resolved into an internal IP. This could cause internal data leaks. This vulnerability is fixed in 4.0.1.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-43897 since 05/04/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 4.0.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 4396d48909fab37553c0e93e26447fe218363ede is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Server-side request forgery
CWE: CWE-918
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: link-preview-js 4.0.1
Patch: 4396d48909fab37553c0e93e26447fe218363ede

Timelineinfo

05/04/2026 CVE reserved
05/12/2026 +8 days Advisory disclosed
05/12/2026 +0 days VulDB entry created
05/12/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-4gp8-rjrq-ch6q
Status: Confirmed

CVE: CVE-2026-43897 (🔒)
GCVE (CVE): GCVE-0-2026-43897
GCVE (VulDB): GCVE-100-362901

Entryinfo

Created: 05/12/2026 04:36
Changes: 05/12/2026 04:36 (71)
Complete: 🔍
Cache ID: 216::103

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