npm-check-updates through 23.0.2, fixed in commit b554b84, contains a terminal escape sequence injection vulnerability that allows an attacker to embed arbitrary terminal control characters in a dependency's package.json homepage or repository URL fields. When a developer runs ncu with the --format homepage or --format repo option, unfiltered escape sequences are written directly to the terminal, enabling malicious output manipulation or other terminal-dependent effects.
CVE-2026-73035
Score 4.3 from GitHub Security Advisory published 2026-08-10. A secondary CVSS source baseline 4.3; sources differ by 0.0.
- Lower severity and no public exploit yet
An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.
- CVSS v3
- 4.3
- EG Score
- 4.3MEDIUMmedium confidence
- EG Risk
- 19EG Risk 19/100CISA SSVC
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 computedSeverity43% × 45%Exploitation0% × 40%Automatability0% × 15%CISA SSVC: Track at every mission impact level.Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release. - EPSS PROB
- 0.4%
- EPSS %ILE
- 28th
- KEV
- Not listed
CISA SSVCTrack at every mission impact level.
An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
August 10, 2026
Last Modified
September 24, 2026
Advisory Details (4)
Auto-updated Aug 10, 2026npm-check-updates 23.0.2 Terminal Injection via Unsanitized Escape Sequences | Advisories | VulnCheck
https://www.vulncheck.com/advisories/npm-check-updates-terminal-injection-via-unsanitized-escape-sequencescommit b554b84848fc (raineorshine/npm-check-updates)
Fix landed in raineorshine/npm-check-updates commit b554b84848fc — awaiting tagged release
https://github.com/raineorshine/npm-check-updates/commit/b554b84848fc0b08a9d2b3d3db15e351387168cfStrip terminal escape sequences from package and registry text
Fix merged in raineorshine/npm-check-updates PR #1994 on 2026-08-08 — awaiting tagged release
https://github.com/raineorshine/npm-check-updates/pull/1994--format homepage/repo output isn't stripped of terminal escape sequences · Issue #1988 · raineorshine/npm-check-updates · GitHub
https://github.com/raineorshine/npm-check-updates/issues/1988Vendor Advisories for CVE-2026-73035(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 13× in last 7d / 73× 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 151 total refreshes for this CVE.
- 2026-10-04 23:22 UTCEPSS rescore
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- 2026-09-22 22:03 UTCEG score recompute
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- 2026-09-04 05:07 UTCEPSS rescore
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- 2026-09-03 02:03 UTCEG score recompute
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- 2026-09-02 14:12 UTCEPSS rescore
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- 2026-09-01 13:54 UTCEPSS rescore
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- 2026-08-31 05:16 UTCEG score recompute
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- 2026-08-30 19:18 UTCEPSS rescore
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- 2026-08-30 07:35 UTCEG score recompute
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- 2026-08-27 00:57 UTCGHSA enrichment
- 2026-08-26 14:47 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2026-73035?
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What is the CVSS score of CVE-2026-73035?
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Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-73035
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