CVE-2026-45740

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% 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
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). A crafted JSON descriptor with deeply nested namespace definitions could cause the JavaScript call stack to be exhausted during descriptor loading. This vulnerability is fixed in 7.5.8 and 8.2.0.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100

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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

Published

May 13, 2026

Last Modified

May 13, 2026

Advisory Details (1)

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

Denial of Service via unbounded recursive JSON descriptor expansion · Advisory · protobufjs/protobuf.js · GitHub

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jggg-4jg4-v7c6

Vendor Advisories for CVE-2026-45740(9)

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

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrh-podman-desktop-0:1.1.2-1.el10_22026-08-20redhat
redhatansible-automation-platform/bootc-automation-portal-rhel9:17860065732026-08-06redhat
redhatrhdh/rhdh-hub-rhel9:17854116522026-08-03redhat
redhatrhdh/red-hat-developer-hub-backstage-plugin-scaffolder-backend-module-orchestrator:17853326942026-07-29redhat
redhatcryostat/cryostat-grafana-dashboard-rhel9:4.2.0-132026-07-29redhat
redhatansible-automation-platform/automation-portal:17846229512026-07-21redhat
redhatrhdh/rhdh-hub-rhel9:17842109212026-07-20redhat

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 rangeFix by version rangeDependents
protobufjs—
  • every version up to 7.5.8: fixed in 7.5.8
  • 8.0.0 up to 8.2.0: fixed in 8.2.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 22× 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 178 total refreshes for this CVE.

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

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

Frequently asked(5)

What is CVE-2026-45740?
CVE-2026-45740 is a medium vulnerability published on May 13, 2026. protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). A crafted JSON descriptor with deeply nested namespace…
When was CVE-2026-45740 disclosed?
CVE-2026-45740 was first published on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45740 actively exploited?
CVE-2026-45740 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45740?
CVE-2026-45740 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-45740?
A fix for CVE-2026-45740 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45740 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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