CVE-2026-44740

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% 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
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

Billy is an interface filesystem abstraction for Go. Prior to versions 5.9.0 and 6.0.0-alpha.1, multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption. These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures. This issue has been patched in versions 5.9.0 and 6.0.0-alpha.1.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

June 1, 2026

Last Modified

July 22, 2026

Advisory Details (3)

Auto-updated Jun 12, 2026
Patch available. Sources: github_release, github.
github Patch Available

Improper input handling may cause panics, infinite loops, or uncontrolled resource consumption · Advisory · go-git/go-billy · GitHub

https://github.com/go-git/go-billy/security/advisories/GHSA-m3xc-h892-ggx6
github_release Patch Available

v6.0.0-alpha.1

Patch available: go-git/go-billy v6.0.0-alpha.1 (pre-release)

https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1
github_release Patch Available

v5.9.0

Patch available: go-git/go-billy v5.9.0

https://github.com/go-git/go-billy/releases/tag/v5.9.0

Vendor Advisories for CVE-2026-44740(20)

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

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatmulticluster-engine/cluster-image-set-controller-rhel9:17869119572026-08-19redhat
redhatodf4/rook-ceph-rhel9-operator:17866295482026-08-19redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17869087772026-08-19redhat
redhatodf4/rook-ceph-rhel9-operator:17867031432026-08-18redhat
redhatexternal-secrets-operator/external-secrets-rhel9:17866146762026-08-13redhat
redhatrhacm2/kube-state-metrics-rhel9:17865493452026-08-12redhat
redhatoadp/oadp-mustgather-rhel9:17851773592026-08-06redhat
redhatrhtas/gitsign-rhel9:17853595472026-08-05redhat
redhatmulticluster-engine/cluster-image-set-controller-rhel9:17846467862026-07-29redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17847401432026-07-29redhat
redhatmulticluster-engine/cluster-image-set-controller-rhel9:17846460262026-07-28redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17842295082026-07-28redhat
redhatgrafana-0:9.2.10-32.el8_102026-07-27redhat
redhatrhtas/gitsign-rhel9:17839598192026-07-16redhat
redhatodf4/rook-ceph-rhel9-operator:17829342842026-07-09redhat
redhatrhacm2/submariner-rhel9-operator:17829331932026-07-08redhat
redhattrivy-main-0.72.0-0.1.hum12026-07-02redhat
redhatgrype-main-0.115.0-0.1.hum12026-06-29redhat
redhatsyft-main-1.46.0-0.1.hum12026-06-29redhat

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

(6 across 4 ecosystems)
Debian:14(2)
PackageVulnerable rangeFixed inDependents
golang-github-go-git-go-billy5.5.0-1, 5.5.0-2, 5.8.0-15.9.0-1—
golang-github-go-git-go-billy-v66~git20260226.45bd095-1, 6~git20260226.45bd095-26.0.0~alpha.1-1—
Go(2)
PackageVulnerable rangeFixed inDependents
github.com/go-git/go-billy/v5—5.9.0—
github.com/go-git/go-billy/v6—6.0.0-alpha.1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-github-go-git-go-billy5.3.1-3 ... 5.9.1-1 (6 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-github-go-git-go-billy5.5.0-1, 5.5.0-2, 5.8.0-1, 5.9.0-1, 5.9.1-1——

Weakness Classification(2)

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 / 43× 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 158 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-44740?
CVE-2026-44740 is a medium vulnerability published on June 1, 2026. Billy is an interface filesystem abstraction for Go. Prior to versions 5.9.0 and 6.0.0-alpha.1, multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption. These issues arise from insufficient…
When was CVE-2026-44740 disclosed?
CVE-2026-44740 was first published in the National Vulnerability Database on June 1, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44740 actively exploited?
CVE-2026-44740 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 67.7% of all scored CVEs.
What is the CVSS score of CVE-2026-44740?
CVE-2026-44740 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-44740?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44740, 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-2026-44740

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