CVE-2026-43897

HIGHNVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 64% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.7Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
8.7
EG Score
8.7HIGHmedium confidence
EG Risk
54
EG Risk 54/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity87% × 45%
Exploitation0% × 40%
Automatability100% × 15%
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

Published

May 11, 2026

Last Modified

May 13, 2026

Advisory Details (4)

Auto-updated May 11, 2026
Patch available. Sources: github.
githubMentions a patch (unverified)

<= 4.0.0 vunerable to IPv6 and internal loopback attacks · Advisory · OP-Engineering/link-preview-js · GitHub

Affected: version 4.0.1. However, it cannot be completely solved by the package alone. The

https://github.com/OP-Engineering/link-preview-js/security/advisories/GHSA-4gp8-rjrq-ch6q
generic

Release Release 4.0.1 · OP-Engineering/link-preview-js · GitHub

https://github.com/OP-Engineering/link-preview-js/releases/tag/4.0.1
generic

Loopback fixes by ospfranco · Pull Request #179 · OP-Engineering/link-preview-js · GitHub

https://github.com/OP-Engineering/link-preview-js/pull/179
generic

Merge pull request #179 from OP-Engineering/oscar/loopback-fixes · OP-Engineering/link-preview-js@4396d48 · GitHub

https://github.com/OP-Engineering/link-preview-js/commit/4396d48909fab37553c0e93e26447fe218363ede

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
link-preview-js—
  • every version up to 4.0.1: fixed in 4.0.1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 163 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
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  11. 2026-09-30 06:58 UTCOSV refresh
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  23. 2026-09-11 11:53 UTCOSV refresh
  24. 2026-09-11 09:37 UTCEPSS rescore
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  1. 2026-09-08 22:00 UTCEPSS rescore
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  20. 2026-08-17 11:00 UTCEG score recompute
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  44. 2026-08-03 19:22 UTCEG score recompute
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  67. 2026-07-16 02:49 UTCOSV refresh
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  75. 2026-07-08 15:16 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

2 shown

npm:link-preview-js

Frequently asked(5)

What is CVE-2026-43897?
CVE-2026-43897 is a high vulnerability published on May 11, 2026. 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.
When was CVE-2026-43897 disclosed?
CVE-2026-43897 was first published on May 11, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43897 actively exploited?
CVE-2026-43897 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43897?
CVE-2026-43897 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-43897?
A fix for CVE-2026-43897 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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