CVE-2026-42338

MEDIUMNVD 6.16.1
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated
6.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (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: 0.5%CVSS: 6.1Exploit: 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 10.1.1, Address6.group() and Address6.link() do not HTML-escape attacker-controlled content before embedding it in the HTML strings they return, and AddressError.parseMessage (emitted by the Address6 constructor for invalid input) can contain unescaped attacker-controlled content in one branch. An application that (1) passes untrusted input to Address6 and (2) renders the output of these methods, or the thrown error's parseMessage, as HTML (e.g. via innerHTML) is vulnerable to cross-site scripting. This vulnerability is fixed in 10.1.1.

CVSS v3
6.1
EG Score
6.1MEDIUMmedium confidence
EG Risk
43
EG Risk 43/100

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 (value × EchelonGraph’s weight)
Severity61% × 45%
The EG Score, 6.1 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (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

May 12, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

XSS in Address6 HTML-emitting methods · Advisory · beaugunderson/ip-address · GitHub

https://github.com/beaugunderson/ip-address/security/advisories/GHSA-v2v4-37r5-5v8g

Vendor Advisories for CVE-2026-42338(20)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(29)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatip-address2026-09-10redhat
redhatrhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:17878015272026-09-08redhat
redhatrhelai3/bootc-rocm-rhel9:17882606202026-09-01redhat
redhatrhelai3/disk-image-cuda-rhel9:17882903142026-09-01redhat
redhatrhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:17871213872026-08-27redhat
redhatrh-podman-desktop-0:1.1.2-1.el10_22026-08-20redhat
redhatodf4/rook-ceph-rhel9-operator:17870615542026-08-19redhat
redhatnodejs:22-9060020260804140259.rhel92026-08-10redhat
redhatsatellite/iop-remediations-rhel9:17860080412026-08-06redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17847246992026-07-28redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17847215812026-07-28redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17847137412026-07-28redhat
redhatrhmtc/openshift-migration-ui-rhel8:17836905322026-07-20redhat
redhatnodejs:22-8100020260703140402.6d8804032026-07-20redhat
redhatnodejs:24-8100020260630152626.6d8804032026-07-15redhat
redhatnodejs22-1:22.23.1-2.el10_02026-07-14redhat
redhatdevspaces/dashboard-rhel9:17824987922026-07-08redhat
redhatrhdh/rhdh-hub-rhel9:17834481842026-07-08redhat
redhatnodejs22-1:22.23.1-2.el10_22026-07-06redhat
redhatnodejs:24-9080020260626074955.rhel92026-07-06redhat
redhatnodejs24-1:24.18.0-1.el10_22026-07-06redhat
redhatnodejs:22-9080020260626075442.rhel92026-07-06redhat
redhatansible-automation-platform-tech-preview/mcp-server-rhel9:17827211302026-07-01redhat
redhatrhdh/rhdh-hub-rhel9:17827612442026-06-30redhat
redhatopenshift-service-mesh/kiali-rhel9:17822015372026-06-29redhat
redhatopenshift-service-mesh/kiali-rhel9:17822018122026-06-29redhat
redhatopenshift-service-mesh/kiali-rhel8:17822875802026-06-29redhat
redhatopenshift-service-mesh/kiali-rhel9:17822014662026-06-29redhat
redhatopenshift-service-mesh/kiali-rhel9:17822018332026-06-29redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (8 versions)
  • every version on: no fix on record
—
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, 8.1.0-2, 8.1.0-3
  • every version up to 10.2.0-2: fixed in 10.2.0-2
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
ip-address—
  • every version up to 10.1.1: fixed in 10.1.1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(11)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 27× 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.

Showing the most recent 100 of 256 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 156 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-10-12 16:07 UTCEG score recompute
  5. 2026-10-11 19:49 UTCEG score recompute
  6. 2026-10-11 17:03 UTCEG score recompute
  7. 2026-10-11 14:29 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-09-30 07:28 UTCOSV refresh
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  22. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Show 75 more
  1. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-09-11 13:25 UTCVendor advisory
  7. 2026-09-11 12:21 UTCEG score recompute
  8. 2026-09-11 12:21 UTCVendor advisory
  9. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-09-09 13:41 UTCVendor advisory
  12. 2026-09-09 12:39 UTCEG score recompute
  13. 2026-09-09 12:39 UTCVendor advisory
  14. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-09-07 13:57 UTCVendor advisory
  17. 2026-09-07 12:45 UTCEG score recompute
  18. 2026-09-07 12:45 UTCVendor advisory
  19. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-09-03 13:19 UTCVendor advisory
  22. 2026-09-03 12:29 UTCEG score recompute
  23. 2026-09-03 12:29 UTCVendor advisory
  24. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-09-02 13:42 UTCVendor advisory
  26. 2026-09-02 12:39 UTCEG score recompute
  27. 2026-09-02 12:39 UTCVendor advisory
  28. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  29. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  30. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  31. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  32. 2026-08-28 16:47 UTCVendor advisory
  33. 2026-08-28 16:00 UTCEG score recompute
  34. 2026-08-28 16:00 UTCVendor advisory
  35. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  36. 2026-08-26 16:10 UTCEG score recompute
  37. 2026-08-26 16:10 UTCVendor advisory
  38. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  39. 2026-08-26 12:21 UTCEG score recompute
  40. 2026-08-26 12:21 UTCVendor advisory
  41. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  42. 2026-08-25 12:21 UTCEG score recompute
  43. 2026-08-25 12:21 UTCVendor advisory
  44. 2026-08-24 13:29 UTCVendor advisory
  45. 2026-08-24 12:25 UTCEG score recompute
  46. 2026-08-24 12:25 UTCVendor advisory
  47. 2026-08-23 18:09 UTCEG score recompute
  48. 2026-08-23 18:09 UTCVendor advisory
  49. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  50. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  51. 2026-08-21 13:19 UTCVendor advisory
  52. 2026-08-21 12:31 UTCEG score recompute
  53. 2026-08-21 12:31 UTCVendor advisory
  54. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  55. 2026-08-20 13:58 UTCVendor advisory
  56. 2026-08-20 12:43 UTCEG score recompute
  57. 2026-08-20 12:43 UTCVendor advisory
  58. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  59. 2026-08-19 12:27 UTCVendor advisory
  60. 2026-08-19 12:11 UTCEG score recompute
  61. 2026-08-19 12:11 UTCVendor advisory
  62. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  63. 2026-08-18 12:40 UTCVendor advisory
  64. 2026-08-18 12:18 UTCEG score recompute
  65. 2026-08-18 12:18 UTCVendor advisory
  66. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  67. 2026-08-17 12:26 UTCVendor advisory
  68. 2026-08-17 12:12 UTCVendor advisory
  69. 2026-08-17 10:47 UTCEG score recompute
  70. 2026-08-17 10:47 UTCVendor advisory
  71. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  72. 2026-08-16 04:11 UTCEG score recompute
  73. 2026-08-16 04:11 UTCVendor advisory
  74. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  75. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 38th percentile

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Frequently asked(5)

What is CVE-2026-42338?
CVE-2026-42338 is a medium-severity vulnerability; its CVE record was published on May 12, 2026. ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.1.1, Address6.group() and Address6.link() do not HTML-escape attacker-controlled content before embedding it in the HTML strings they return, and AddressError.parseMessage (emitted by the…
When was the CVE record for CVE-2026-42338 published?
The CVE record for CVE-2026-42338 was published on May 12, 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 September 11, 2026; the record at its source may have been updated since.
Is CVE-2026-42338 actively exploited?
CVE-2026-42338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-42338?
CVE-2026-42338 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-42338?
A fix for CVE-2026-42338 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-42338 are linked in the Vendor Advisories panel on this page.

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