CVE-2026-42338

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.5%, top 61% 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
Elevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

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
6.1(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

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
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

May 12, 2026

Last Modified

September 11, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

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 / EcosystemFixed in / 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 rangeFixed inDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (8 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (6 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-ip-address10.2.0-1 ... 8.1.0-3 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-ip-address10.2.0-1, 8.1.0-2, 8.1.0-310.2.0-2—
npm(1)
PackageVulnerable rangeFixed inDependents
ip-address—10.1.1—

Weakness Classification(1)

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

Additional Vendor Advisories

(10)

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 6× in last 7d / 59× 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 233 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-42338?
CVE-2026-42338 is a medium vulnerability 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 CVE-2026-42338 disclosed?
CVE-2026-42338 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42338 actively exploited?
CVE-2026-42338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 60.1% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42338, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-42338

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