CVE-2026-42044

CRITICALNVD 9.16.5▼
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 59% 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
Trending — 3 sources updated this weekElevated
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.1Exploit: NoneExposed: 0

A fix is available — apply it.

Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.2, he Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into surgical, invisible modification of all JSON API responses — including privilege escalation, balance manipulation, and authorization bypass. The default transformResponse function at lib/defaults/index.js:124 calls JSON.parse(data, this.parseReviver), where this is the merged config object. Because parseReviver is not present in Axios defaults, not validated by assertOptions, and not subject to any constraints, a polluted Object.prototype.parseReviver function is called for every key-value pair in every JSON response, allowing the attacker to selectively modify individual values while leaving the rest of the response intact. This vulnerability is fixed in 1.15.2.

CVSS v3
9.1
EG Score
6.5(medium)
EPSS
43.9%
KEV
Not listed

Published

April 24, 2026

Last Modified

July 10, 2026

Advisory Details (1)

Auto-updated Jun 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Invisible JSON Response Tampering via Prototype Pollution Gadget in `parseReviver` · Advisory · axios/axios · GitHub

Affected: 1.15.0)

https://github.com/axios/axios/security/advisories/GHSA-3w6x-2g7m-8v23

Vendor Advisories for CVE-2026-42044(20)

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

Patch Availability(28)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmulticluster-engine/console-mce-rhel9:17809108882026-06-11redhat
redhatrhacm2/console-rhel9:17806008232026-06-11redhat
redhatrhmtc/openshift-migration-ui-rhel8:17805907172026-06-10redhat
redhataxios2026-06-10redhat
redhatquay/quay-rhel8:17808913952026-06-09redhat
redhatmulticluster-engine/console-mce-rhel9:17809175312026-06-08redhat
redhatrhacm2/console-rhel9:17808767342026-06-08redhat
redhatrhtas/rhtas-console-ui-rhel9:17799715062026-06-08redhat
redhatnetwork-observability/network-observability-console-plugin-rhel9:17805560692026-06-08redhat
redhatquay/quay-rhel8:17798114732026-06-04redhat
redhatquay/quay-rhel8:17798222612026-06-03redhat
redhatquay/quay-rhel9:17799222052026-06-02redhat
redhatquay/quay-rhel8:17798114122026-06-02redhat
redhatdevspaces/dashboard-rhel9:17793412892026-05-28redhat
redhatrhdh/rhdh-hub-rhel9:17798415862026-05-27redhat
redhatadvanced-cluster-security/rhacs-main-rhel8:17792930132026-05-26redhat
redhatadvanced-cluster-security/rhacs-main-rhel8:17793715942026-05-26redhat
redhatquay/quay-rhel8:17796893922026-05-26redhat
redhatopenshift-service-mesh/kiali-rhel8:17795203482026-05-25redhat
redhatdiscovery/discovery-ui-rhel9:17793951882026-05-21redhat
redhatmulticluster-engine/console-mce-rhel9:17785326102026-05-19redhat
redhatquay/quay-rhel9:17792040862026-05-19redhat
redhatmulticluster-engine/console-mce-rhel9:17783838632026-05-14redhat
redhatmulticluster-engine/console-mce-rhel9:17785113482026-05-14redhat
redhatopenshift-service-mesh/kiali-rhel9:17781640422026-05-12redhat
redhatopenshift-service-mesh/kiali-rhel9:17781639862026-05-12redhat
redhatopenshift-service-mesh/kiali-rhel9:17781639092026-05-12redhat
redhatopenshift-service-mesh/kiali-rhel9:17781642082026-05-12redhat

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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
axios—1.15.2—

Weakness Classification(2)

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

Additional Vendor Advisories

(17)

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 15× in last 7d / 44× 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 103 total refreshes for this CVE.

  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-10 12:26 UTCNVD updateCVSS v3 → 9.1 · severity → CRITICAL
  4. 2026-07-10 12:12 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  5. 2026-07-09 19:10 UTCEPSS rescore
  6. 2026-07-09 13:52 UTCNVD updateCVSS v3 → 9.1 · severity → CRITICAL
  7. 2026-07-09 12:25 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  8. 2026-07-08 15:15 UTCEPSS rescore
  9. 2026-07-07 14:14 UTCNVD updateCVSS v3 → 9.1 · severity → CRITICAL
  10. 2026-07-07 13:46 UTCEPSS rescore
  11. 2026-07-07 12:11 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-06-30 23:22 UTCEPSS rescore
  20. 2026-06-30 04:32 UTCNVD updateCVSS v3 → 9.1 · severity → CRITICAL
  21. 2026-06-29 14:06 UTCEPSS rescore
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 04:56 UTCEPSS rescore
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-25 13:49 UTCEPSS rescore
Show 75 more
  1. 2026-06-25 13:49 UTCEPSS rescore
  2. 2026-06-24 14:05 UTCEPSS rescore
  3. 2026-06-23 21:33 UTCEPSS rescore
  4. 2026-06-22 14:25 UTCEPSS rescore
  5. 2026-06-22 14:25 UTCEPSS rescore
  6. 2026-06-21 14:56 UTCEPSS rescore
  7. 2026-06-21 14:56 UTCEPSS rescore
  8. 2026-06-21 01:59 UTCEPSS rescore
  9. 2026-06-19 19:25 UTCEPSS rescore
  10. 2026-06-18 17:52 UTCEPSS rescore
  11. 2026-06-18 17:52 UTCEPSS rescore
  12. 2026-06-17 17:53 UTCEPSS rescore
  13. 2026-06-16 17:52 UTCEPSS rescore
  14. 2026-06-15 17:49 UTCEPSS rescore
  15. 2026-06-14 11:34 UTCEG score recompute
  16. 2026-06-14 11:34 UTCVendor advisory
  17. 2026-06-13 23:00 UTCEPSS rescore
  18. 2026-06-12 23:12 UTCEPSS rescore
  19. 2026-06-12 23:12 UTCEPSS rescore
  20. 2026-06-11 14:00 UTCEPSS rescore
  21. 2026-06-11 13:05 UTCEG score recompute
  22. 2026-06-11 13:05 UTCVendor advisory
  23. 2026-06-10 22:18 UTCEPSS rescore
  24. 2026-06-10 13:22 UTCEPSS rescore
  25. 2026-06-10 13:22 UTCEPSS rescore
  26. 2026-06-10 05:22 UTCEG score recompute
  27. 2026-06-10 05:22 UTCVendor advisory
  28. 2026-06-09 03:21 UTCEG score recompute
  29. 2026-06-09 03:21 UTCVendor advisory
  30. 2026-06-08 14:17 UTCEPSS rescore
  31. 2026-06-08 14:17 UTCEPSS rescore
  32. 2026-06-08 01:19 UTCEG score recompute
  33. 2026-06-08 01:19 UTCVendor advisory
  34. 2026-06-07 15:25 UTCEPSS rescore
  35. 2026-06-07 15:25 UTCEPSS rescore
  36. 2026-06-06 23:18 UTCEG score recompute
  37. 2026-06-06 23:18 UTCVendor advisory
  38. 2026-06-06 13:47 UTCEPSS rescore
  39. 2026-06-06 13:47 UTCEPSS rescore
  40. 2026-06-05 22:47 UTCEPSS rescore
  41. 2026-06-05 21:15 UTCEG score recompute
  42. 2026-06-05 21:15 UTCVendor advisory
  43. 2026-06-05 06:10 UTCEPSS rescore
  44. 2026-06-05 06:10 UTCEPSS rescore
  45. 2026-06-04 19:13 UTCEG score recompute
  46. 2026-06-04 19:13 UTCVendor advisory
  47. 2026-06-04 13:12 UTCEPSS rescore
  48. 2026-06-04 13:12 UTCEPSS rescore
  49. 2026-06-03 17:11 UTCEG score recompute
  50. 2026-06-03 17:11 UTCVendor advisory
  51. 2026-06-02 20:13 UTCEPSS rescore
  52. 2026-06-02 15:09 UTCEG score recompute
  53. 2026-06-02 15:09 UTCVendor advisory
  54. 2026-06-01 13:52 UTCEPSS rescore
  55. 2026-06-01 13:52 UTCEPSS rescore
  56. 2026-06-01 13:07 UTCEG score recompute
  57. 2026-06-01 13:07 UTCVendor advisory
  58. 2026-05-31 22:30 UTCEPSS rescore
  59. 2026-05-31 22:30 UTCEPSS rescore
  60. 2026-05-31 00:16 UTCEPSS rescore
  61. 2026-05-31 00:16 UTCEPSS rescore
  62. 2026-05-31 00:16 UTCEPSS rescore
  63. 2026-05-29 13:44 UTCEPSS rescore
  64. 2026-05-29 13:44 UTCEPSS rescore
  65. 2026-05-28 13:44 UTCEPSS rescore
  66. 2026-05-28 13:44 UTCEPSS rescore
  67. 2026-05-28 13:44 UTCEPSS rescore
  68. 2026-05-27 13:40 UTCEPSS rescore
  69. 2026-05-27 13:40 UTCEPSS rescore
  70. 2026-05-27 13:40 UTCEPSS rescore
  71. 2026-05-26 13:44 UTCEPSS rescore
  72. 2026-05-26 07:18 UTCEPSS rescore
  73. 2026-05-26 07:18 UTCEPSS rescore
  74. 2026-05-23 00:08 UTCEG score recompute
  75. 2026-05-20 15:46 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-42044?
CVE-2026-42044 is a critical vulnerability published on April 24, 2026. Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.2, he Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into surgical, invisible…
When was CVE-2026-42044 disclosed?
CVE-2026-42044 was first published in the National Vulnerability Database on April 24, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42044 actively exploited?
CVE-2026-42044 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 43.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42044?
CVE-2026-42044 has a CVSS v3 base score of 9.1 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.5.
How do I remediate CVE-2026-42044?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42044, 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

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