CVE-2026-101911

MEDIUMPre-NVD 6.36.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (32nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-88395 (ENISA EUVD) · GHSA-h3mg-xc3c-68pw (GitHub Security Advisories)Source: ENISA EUVD

6.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.3Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.7.1, the Address6 constructor, Address6.isValid, and parse code in src/ipv6.ts accept unbounded strings and expand invalid characters through RE_BAD_CHARACTERS into large diagnostics. Material impact occurs only when an application accepts a very large attacker-controlled field and passes it to Address6 parsing without an earlier length bound. Common URL and header limits, and common body-parser defaults, generally constrain the effect; common defaults typically exclude 32 MiB fields. Megabyte-scale fields can cause a synchronous stall and high transient memory use, approximately 16 MiB can trigger an invalid string length exception, and process termination occurs at approximately 32 MiB. The affected entry points include Address6.isValid and construction paths that reach parse. This issue is fixed in version 10.7.1.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity63% × 45%
Impact severity (EG Severity): CVSS 6.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
32nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.3): severity, escalated by confirmed exploitation. This CVE's 6.3 is its impact severity (EG Severity), not escalated.

EG Severity
6.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 28, 2026

Last Modified

October 1, 2026

Advisory Details (4)

Auto-updated Sep 28, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

v10.7.1

Patch available: beaugunderson/ip-address v10.7.1

https://github.com/beaugunderson/ip-address/releases/tag/v10.7.1
GitHub commit Patch Available

commit 8b34a21e0839 (beaugunderson/ip-address)

Patch available: beaugunderson/ip-address v10.7.1 (contains commit 8b34a21e0839)

https://github.com/beaugunderson/ip-address/commit/8b34a21e0839b37c094066816fb2c2c48a2adcf5
GitHub commit Patch Available

commit 469ead1231b4 (beaugunderson/ip-address)

Patch available: beaugunderson/ip-address v10.7.1 (contains commit 469ead1231b4)

https://github.com/beaugunderson/ip-address/commit/469ead1231b4cc059f2150c626e1e0c2895c0134
GitHub advisoryMentions a patch (unverified)

ip-address: Address6 builds a parse diagnostic proportional to the input with no length bound, allowing a single long string to stall or crash the process · Advisory · beaugunderson/ip-address · GitHub

https://github.com/beaugunderson/ip-address/security/advisories/GHSA-h3mg-xc3c-68pw

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmip-address @ 10.7.1 (fixes <= 10.7.0)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (7 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (7 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (6 versions)
  • every version up to 10.7.2-1: fixed in 10.7.2-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
ip-address—
  • every version up to 10.7.1: fixed in 10.7.1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 47× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  2. 2026-11-01 08:00 UTCGHSA enrichmentGHSA-h3mg-xc3c-68pw · GitHub severity MODERATE
  3. 2026-11-01 08:00 UTCEG score recompute
  4. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  5. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  6. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-10-29 14:47 UTCEG score recompute
  8. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  10. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-10-25 14:57 UTCEG score recompute
  13. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  15. 2026-10-23 09:32 UTCEG score recompute
  16. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-10-18 05:11 UTCEG score recompute
  21. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  24. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
Show 33 more
  1. 2026-10-12 16:41 UTCEG score recompute
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-10-11 20:16 UTCEG score recompute
  4. 2026-10-11 18:09 UTCEG score recompute
  5. 2026-10-11 15:02 UTCEG score recompute
  6. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-10-09 21:33 UTCEG score recompute
  9. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  10. 2026-10-08 23:34 UTCEG score recompute
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  12. 2026-10-08 01:37 UTCEG score recompute
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  14. 2026-10-07 03:38 UTCEG score recompute
  15. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  16. 2026-10-06 05:35 UTCEG score recompute
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-10-05 07:38 UTCEG score recompute
  19. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-10-04 09:40 UTCEG score recompute
  21. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  22. 2026-10-03 11:41 UTCEG score recompute
  23. 2026-10-02 13:21 UTCEG score recompute
  24. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  25. 2026-10-01 15:23 UTCEG score recompute
  26. 2026-10-01 14:51 UTCEG score recompute
  27. 2026-09-30 20:02 UTCEG score recompute
  28. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  29. 2026-09-29 16:19 UTCEG score recompute
  30. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  31. 2026-09-28 18:20 UTCEG score recompute
  32. 2026-09-28 17:54 UTCEG score recomputeFirst assessed: 6.3 MEDIUM
  33. 2026-09-28 17:51 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-101911?
CVE-2026-101911 is a medium-severity vulnerability; its CVE record was published on September 28, 2026. ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.7.1, the Address6 constructor, Address6.isValid, and parse code in src/ipv6.ts accept unbounded strings and expand invalid characters through RE_BAD_CHARACTERS into large diagnostics. Material…
When was the CVE record for CVE-2026-101911 published?
The CVE record for CVE-2026-101911 was published on September 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 1, 2026; the record at its source may have been updated since.
Is CVE-2026-101911 actively exploited?
CVE-2026-101911 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101911?
CVE-2026-101911 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-101911?
A fix for CVE-2026-101911 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-101911 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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