CVE-2026-44024

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.1% (64th percentile of EPSS-scored CVEs). 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, secondary
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.1%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd allows dynamically constructing file paths using the ${tag} placeholder, and insufficient validation of ${tag} in file configurations such as the path parameter of the out_file plugin allows attackers sending untrusted tags containing path traversal characters to write or overwrite arbitrary files and potentially achieve remote code execution. This issue is fixed in version 1.19.3.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
60
EG Risk 60/100

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)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
1.1%
EPSS %ILE
64th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

June 26, 2026

Last Modified

July 13, 2026

Advisory Details (4)

Auto-updated Oct 11, 2026
Patch available. Sources: github_pr, github_release, github, github_commit.
githubMentions a patch (unverified)

Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder · Advisory · fluent/fluentd · GitHub

https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3
github_release Patch Available

Fluentd v1.19.3

Patch available: fluent/fluentd v1.19.3

https://github.com/fluent/fluentd/releases/tag/v1.19.3
github_pr Patch Available

Backport(v1.19) output: enforce strict path boundary validation for tag

Patch available: fluent/fluentd v1.19.3 (PR #5391 merged 2026-06-25)

https://github.com/fluent/fluentd/pull/5391
github_commit Patch Available

commit 45c87a81f3ac (fluent/fluentd)

Patch available: fluent/fluentd v1.19.3 (contains commit 45c87a81f3ac)

https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437

Vendor Advisories for CVE-2026-44024(1)

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

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
fluentd0.10.0 ... 1.9.3 (242 versions)
  • every version up to 1.19.3: fixed in 1.19.3
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 27× 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 100 of 121 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. None are among the latest 100 rows. The 21 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 17:02 UTCEG score recompute
  2. 2026-10-11 14:27 UTCEG score recompute
  3. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  4. 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  6. 2026-10-08 17:12 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  7. 2026-10-07 23:48 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  8. 2026-10-06 15:18 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  9. 2026-10-05 17:43 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  11. 2026-10-03 14:25 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  12. 2026-10-01 19:50 UTCEPSS rescoreEPSS 1.1% · 64th percentile
  13. 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  14. 2026-09-27 13:48 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  15. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  16. 2026-09-23 17:53 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  17. 2026-09-23 07:51 UTCEG score recompute
  18. 2026-09-20 20:15 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  19. 2026-09-18 19:28 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  20. 2026-09-18 07:13 UTCEG score recompute
  21. 2026-09-17 19:31 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  24. 2026-09-14 01:11 UTCEG score recompute
  25. 2026-09-13 16:47 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
Show 75 more
  1. 2026-09-12 15:35 UTCEG score recompute
  2. 2026-09-12 15:01 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  3. 2026-09-11 14:53 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  4. 2026-09-11 09:37 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  5. 2026-09-10 09:34 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  6. 2026-09-08 22:00 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  7. 2026-09-07 16:01 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  8. 2026-09-06 13:47 UTCEPSS rescoreEPSS 1.1% · 63rd percentile
  9. 2026-09-04 05:06 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  10. 2026-09-02 14:12 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  11. 2026-09-01 13:54 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  12. 2026-08-30 19:21 UTCEG score recompute
  13. 2026-08-30 19:17 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  14. 2026-08-30 01:22 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  15. 2026-08-28 21:41 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  16. 2026-08-27 23:06 UTCEG score recompute
  17. 2026-08-27 14:25 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  18. 2026-08-26 14:46 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  19. 2026-08-25 13:49 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  20. 2026-08-24 21:49 UTCEG score recompute
  21. 2026-08-24 12:54 UTCEG score recompute
  22. 2026-08-23 00:53 UTCEG score recompute
  23. 2026-08-23 00:19 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  24. 2026-08-22 00:59 UTCEG score recompute
  25. 2026-08-21 23:49 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  26. 2026-08-20 23:31 UTCEG score recompute
  27. 2026-08-20 22:55 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  28. 2026-08-20 06:51 UTCEG score recompute
  29. 2026-08-19 17:04 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  30. 2026-08-18 23:55 UTCEG score recompute
  31. 2026-08-18 13:48 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  32. 2026-08-16 18:27 UTCEG score recompute
  33. 2026-08-16 14:56 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  34. 2026-08-16 03:16 UTCEG score recompute
  35. 2026-08-16 02:14 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  36. 2026-08-15 02:15 UTCEG score recompute
  37. 2026-08-15 01:30 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  38. 2026-08-13 23:37 UTCEG score recompute
  39. 2026-08-13 22:00 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  40. 2026-08-12 16:15 UTCEG score recompute
  41. 2026-08-12 13:51 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  42. 2026-08-11 17:28 UTCEG score recompute
  43. 2026-08-11 13:43 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  44. 2026-08-11 02:06 UTCEG score recompute
  45. 2026-08-11 00:00 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  46. 2026-08-09 15:56 UTCEG score recompute
  47. 2026-08-09 13:46 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  48. 2026-08-08 17:10 UTCEG score recompute
  49. 2026-08-08 16:37 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  50. 2026-08-07 18:21 UTCEG score recompute
  51. 2026-08-06 15:46 UTCEG score recompute
  52. 2026-08-06 13:46 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  53. 2026-08-05 20:38 UTCEG score recompute
  54. 2026-08-05 19:17 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  55. 2026-08-04 18:46 UTCEG score recompute
  56. 2026-08-04 15:10 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  57. 2026-08-04 14:58 UTCEG score recompute
  58. 2026-08-04 10:38 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  59. 2026-08-03 13:56 UTCEG score recompute
  60. 2026-08-03 10:36 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  61. 2026-08-02 04:53 UTCEG score recompute
  62. 2026-08-02 02:27 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  63. 2026-08-01 06:05 UTCEG score recompute
  64. 2026-08-01 04:16 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  65. 2026-07-30 17:45 UTCEG score recompute
  66. 2026-07-30 16:28 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  67. 2026-07-30 13:23 UTCEG score recompute
  68. 2026-07-30 04:05 UTCEG score recompute
  69. 2026-07-30 01:30 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  70. 2026-07-28 20:26 UTCEG score recompute
  71. 2026-07-28 15:36 UTCEPSS rescoreEPSS 1.1% · 62nd percentile
  72. 2026-07-27 17:06 UTCEG score recompute
  73. 2026-07-27 14:13 UTCEPSS rescoreEPSS 1.1% · 61st percentile
  74. 2026-07-26 18:42 UTCEG score recompute
  75. 2026-07-26 14:54 UTCEPSS rescoreEPSS 1.1% · 61st percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-44024?
CVE-2026-44024 is a critical-severity vulnerability; its CVE record was published on June 26, 2026. Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Prior to 1.19.3, Fluentd allows dynamically constructing file paths using the ${tag} placeholder, and insufficient validation of ${tag} in file configurations such as the path…
When was the CVE record for CVE-2026-44024 published?
The CVE record for CVE-2026-44024 was published on June 26, 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 July 13, 2026; the record at its source may have been updated since.
Is CVE-2026-44024 actively exploited?
CVE-2026-44024 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.1% probability of exploitation in the next 30 days (64th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44024?
CVE-2026-44024 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-44024?
A fix for CVE-2026-44024 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-44024 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44024

Explore →

Is Your Infrastructure Affected by CVE-2026-44024?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs