CVE-2026-34043

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.6% (46th 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
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity75% × 45%
The EG Score, 7.5 of 10.
Exploitation0.6% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (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
0.6%
EPSS %ILE
46th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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

Exploitation none (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

March 31, 2026

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github_release, github.
GitHub advisoryMentions a patch (unverified)

Denial of Service (CPU Exhaustion) via crafted array-like objects · Advisory · yahoo/serialize-javascript · GitHub

https://github.com/yahoo/serialize-javascript/security/advisories/GHSA-qj8w-gfj5-8c6v
GitHub release Patch Available

Release v7.0.5 (yahoo/serialize-javascript)

Patch available: yahoo/serialize-javascript v7.0.5

https://github.com/yahoo/serialize-javascript/releases/tag/v7.0.5
GitHub commit Patch Available

commit f147e90269b5 (yahoo/serialize-javascript)

Patch available: yahoo/serialize-javascript v7.0.5 (contains commit f147e90269b5)

https://github.com/yahoo/serialize-javascript/commit/f147e90269b58bb6e539cfdf3d0e20d6ad14204b

Vendor Advisories for CVE-2026-34043(15)

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

Patch Availability(12)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatopenshift4/ose-networking-console-plugin-rhel9:17821856072026-07-09redhat
redhatopenshift4/ose-networking-console-plugin-rhel9:17822114352026-07-01redhat
redhatdotnet8.0-0:8.0.127-1.el10_02026-06-08redhat
redhatdotnet8.0-0:8.0.127-1.el9_62026-06-08redhat
redhatdotnet8.0-0:8.0.127-1.el9_42026-06-08redhat
redhatopenshift4/ose-networking-console-plugin-rhel9:17792563222026-05-27redhat
redhatdotnet8.0-0:8.0.127-1.el10_22026-05-27redhat
redhatdotnet8.0-0:8.0.127-1.el8_102026-05-27redhat
redhatdotnet8.0-0:8.0.127-1.el9_82026-05-27redhat
redhatopenshift4/ose-networking-console-plugin-rhel9:17782562872026-05-20redhat
redhatopenshift4/ose-networking-console-plugin-rhel9:17786448582026-05-20redhat
redhatopenshift4/ose-networking-console-plugin-rhel9:17785325002026-05-19redhat

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-serialize-javascript5.0.1-2 ... 7.0.7+~5.0.4-1 (8 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-serialize-javascript6.0.0-2 ... 7.1.2+~5.0.4-1 (8 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-serialize-javascript6.0.2-1, 7.0.4+~5.0.4-1, 7.0.5+~5.0.4-1, 7.0.7+~5.0.4-1, 7.1.2+~5.0.4-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-serialize-javascript6.0.2-1, 7.0.4+~5.0.4-1
  • every version up to 7.0.5+~5.0.4-1: fixed in 7.0.5+~5.0.4-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
serialize-javascript—
  • 5.0.0 up to 7.0.5: fixed in 7.0.5
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 30× 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 98 of 215 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 117 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  4. 2026-10-12 16:13 UTCEG score recompute
  5. 2026-10-11 19:55 UTCEG score recompute
  6. 2026-10-11 17:08 UTCEG score recompute
  7. 2026-10-11 14:35 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  9. 2026-10-11 04:01 UTCOSV refresh
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  12. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  20. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-09-21 15:49 UTCOSV refresh
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 40th percentile
Show 73 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  2. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  3. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  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. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-09-02 12:44 UTCOSV refresh
  17. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  22. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  23. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  25. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  26. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  27. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  28. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  29. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  30. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  31. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  32. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  33. 2026-08-16 09:42 UTCEG score recompute
  34. 2026-08-16 09:42 UTCVendor advisory
  35. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  36. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  37. 2026-08-14 19:07 UTCVendor advisory
  38. 2026-08-14 06:06 UTCEG score recompute
  39. 2026-08-14 06:06 UTCVendor advisory
  40. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  41. 2026-08-12 20:26 UTCEG score recompute
  42. 2026-08-12 20:26 UTCVendor advisory
  43. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  44. 2026-08-11 20:38 UTCEG score recompute
  45. 2026-08-11 20:38 UTCVendor advisory
  46. 2026-08-11 03:39 UTCEG score recompute
  47. 2026-08-11 03:39 UTCVendor advisory
  48. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  49. 2026-08-10 06:28 UTCVendor advisory
  50. 2026-08-09 18:04 UTCEG score recompute
  51. 2026-08-09 18:04 UTCVendor advisory
  52. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  53. 2026-08-09 05:41 UTCEG score recompute
  54. 2026-08-09 05:41 UTCVendor advisory
  55. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  56. 2026-08-08 04:10 UTCEG score recompute
  57. 2026-08-08 04:10 UTCVendor advisory
  58. 2026-08-07 15:46 UTCVendor advisory
  59. 2026-08-06 18:14 UTCEG score recompute
  60. 2026-08-06 18:14 UTCVendor advisory
  61. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  62. 2026-08-06 00:38 UTCEG score recompute
  63. 2026-08-06 00:38 UTCVendor advisory
  64. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  65. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  66. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  67. 2026-08-03 22:58 UTCEG score recompute
  68. 2026-08-03 22:58 UTCVendor advisory
  69. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  70. 2026-08-02 15:00 UTCEG score recompute▲ 1.60
  71. 2026-08-02 15:00 UTCVendor advisory
  72. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  73. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.5% · 38th percentile

Related CVEs(same product + same vendor + same CWE)

Same product

4 shown

Debian:12:node-serialize-javascript · npm:serialize-javascript

Frequently asked(5)

What is CVE-2026-34043?
CVE-2026-34043 is a high-severity vulnerability; its CVE record was published on March 31, 2026. Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but…
When was the CVE record for CVE-2026-34043 published?
The CVE record for CVE-2026-34043 was published on March 31, 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-34043 actively exploited?
CVE-2026-34043 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34043?
CVE-2026-34043 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-34043?
A fix for CVE-2026-34043 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-34043 are linked in the Vendor Advisories panel on this page.

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