CVE-2026-84374

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-08. A secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-69706 (ENISA EUVD) · GHSA-c7r6-vx3h-w5g2 (GitHub Security Advisories)Source: ENISA EUVD

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: 0.8%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Laravel Excel provides supercharged Excel exports and imports in Laravel. From 3.1.8 until 3.1.70, in src/Files/Disk.php the Maatwebsite\Excel\Files\Disk::copy() method resolves the caller-controlled $destination supplied through Excel::store(), $export->store(), or storeExcel() against the process working directory with realpath() instead of the configured filesystem disk. If the path names an existing writable file, Disk::copy() opens it with fopen() in rb+ mode and uses stream_copy_to_stream(), bypassing Flysystem path confinement and allowing an attacker whose application input controls the export path to overwrite arbitrary existing files with export content. The rb+ behavior creates a non-truncating overwrite and trailing bytes when the new export is shorter, and overwriting an executable PHP file can lead to remote code execution. This issue is fixed in version 3.1.70.

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 impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.8%
EPSS %ILE
58th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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

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

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

September 1, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Sep 1, 2026
Patch available. Sources: github_commit, github_release, github.
GitHub release Patch Available

3.1.70

Patch available: SpartnerNL/Laravel-Excel 3.1.70

https://github.com/SpartnerNL/Laravel-Excel/releases/tag/3.1.70
GitHub commit Patch Available

commit b5cafdfcf7ec (SpartnerNL/Laravel-Excel)

Patch available: SpartnerNL/Laravel-Excel 3.1.70 (contains commit b5cafdfcf7ec)

https://github.com/SpartnerNL/Laravel-Excel/commit/b5cafdfcf7ec63924e83303763be8fcae340f70b
GitHub advisoryMentions a patch (unverified)

Laravel Excel writes exports outside the configured filesystem disk when given a caller-controlled path · Advisory · SpartnerNL/Laravel-Excel · GitHub

https://github.com/SpartnerNL/Laravel-Excel/security/advisories/GHSA-c7r6-vx3h-w5g2

Vendor Advisories for CVE-2026-84374(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
composermaatwebsite/excel @ 3.1.70 (fixes >= 3.1.8, < 3.1.70)—ghsa

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)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
maatwebsite/excel3.1.10 ... 3.1.9 (62 versions)
  • 3.1.8 up to 3.1.70: fixed in 3.1.70
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 34× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 124 rows 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 24 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 01:18 UTCEchelonGraph re-scored
  2. 2026-11-13 01:18 UTCGHSA enrichmentGHSA-c7r6-vx3h-w5g2 · GitHub severity HIGH · GitHub CVSS 7.5
  3. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  4. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  5. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  6. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  7. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  8. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  9. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  10. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  11. 2026-11-05 10:32 UTCEchelonGraph re-scored
  12. 2026-11-05 10:32 UTCGHSA enrichmentGHSA-c7r6-vx3h-w5g2 · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.8% · 58th percentile
  14. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  15. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  16. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  17. 2026-11-01 07:38 UTCGHSA enrichmentGHSA-c7r6-vx3h-w5g2 · GitHub severity HIGH · GitHub CVSS 7.5
  18. 2026-11-01 07:38 UTCEchelonGraph re-scored
  19. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  20. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  21. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  22. 2026-10-28 19:42 UTCEchelonGraph re-scored
  23. 2026-10-28 17:25 UTCOSV refresh
  24. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  25. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.8% · 57th percentile
Show 75 more
  1. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  2. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  3. 2026-10-25 13:56 UTCEchelonGraph re-scored
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  5. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  6. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  7. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  8. 2026-10-20 20:20 UTCEchelonGraph re-scored
  9. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  10. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  11. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  12. 2026-10-18 03:06 UTCEchelonGraph re-scored
  13. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  14. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  15. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  16. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.8% · 57th percentile
  17. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  18. 2026-10-13 05:36 UTCEchelonGraph re-scored
  19. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  20. 2026-10-12 14:53 UTCEchelonGraph re-scored
  21. 2026-10-11 19:18 UTCEchelonGraph re-scored
  22. 2026-10-11 16:35 UTCEchelonGraph re-scored
  23. 2026-10-11 13:52 UTCEchelonGraph re-scored
  24. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  25. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  26. 2026-10-10 00:01 UTCEchelonGraph re-scored
  27. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  28. 2026-10-09 01:50 UTCEchelonGraph re-scored
  29. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  30. 2026-10-08 00:03 UTCEchelonGraph re-scored
  31. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  32. 2026-10-06 17:18 UTCEchelonGraph re-scored
  33. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  34. 2026-10-06 05:01 UTCEchelonGraph re-scored
  35. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  36. 2026-10-05 02:45 UTCEchelonGraph re-scored
  37. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  38. 2026-10-04 01:48 UTCEchelonGraph re-scored
  39. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  40. 2026-10-02 20:55 UTCEchelonGraph re-scored
  41. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  42. 2026-10-01 20:01 UTCEchelonGraph re-scored
  43. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  44. 2026-09-30 19:28 UTCEchelonGraph re-scored
  45. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  46. 2026-09-30 03:13 UTCEchelonGraph re-scored
  47. 2026-09-29 09:23 UTCEchelonGraph re-scored
  48. 2026-09-28 20:56 UTCEchelonGraph re-scored
  49. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  50. 2026-09-27 18:03 UTCEchelonGraph re-scored
  51. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  52. 2026-09-26 17:29 UTCEchelonGraph re-scored
  53. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  54. 2026-09-26 05:09 UTCEchelonGraph re-scored
  55. 2026-09-24 18:31 UTCEchelonGraph re-scored
  56. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  57. 2026-09-24 05:33 UTCEchelonGraph re-scored
  58. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  59. 2026-09-22 16:36 UTCEchelonGraph re-scored
  60. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  61. 2026-09-22 04:18 UTCEchelonGraph re-scored
  62. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  63. 2026-09-21 03:44 UTCEchelonGraph re-scored
  64. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  65. 2026-09-20 03:11 UTCEchelonGraph re-scored
  66. 2026-09-19 02:38 UTCEchelonGraph re-scored
  67. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  68. 2026-09-18 01:49 UTCEchelonGraph re-scored
  69. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  70. 2026-09-17 01:16 UTCEchelonGraph re-scored
  71. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  72. 2026-09-16 12:59 UTCEchelonGraph re-scored
  73. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  74. 2026-09-15 12:22 UTCEchelonGraph re-scored
  75. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.6% · 45th percentile

Frequently asked(5)

What is CVE-2026-84374?
CVE-2026-84374 is a high-severity vulnerability; its CVE record was published on September 1, 2026. Laravel Excel provides supercharged Excel exports and imports in Laravel. From 3.1.8 until 3.1.70, in src/Files/Disk.php the Maatwebsite\Excel\Files\Disk::copy() method resolves the caller-controlled $destination supplied through Excel::store(), $export->store(), or storeExcel() against the process…
When was the CVE record for CVE-2026-84374 published?
The CVE record for CVE-2026-84374 was published on September 1, 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 September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-84374 actively exploited?
CVE-2026-84374 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (58th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-84374?
CVE-2026-84374 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-84374?
A fix for CVE-2026-84374 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-84374 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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