CVE-2026-27891

HIGHNVD 7.27.2
EchelonGraph scoreMEDIUM confidence

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

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-07. NVD baseline CVSS 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated
7.2EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 7.2Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

FacturaScripts is an open source accounting and invoicing software. Versions 2026 and below contain a critical vulnerability in the Plugins::add() function. The system fails to properly validate the file paths within uploaded ZIP archives. This allows an attacker to perform a Zip Slip attack, leading to Arbitrary File Write and Remote Code Execution (RCE) by overwriting sensitive .php files outside the designated plugins directory. The vulnerability is located in Plugins.php. While the testZipFile function attempts to validate that the ZIP contains only one root folder, it does not sanitize or validate the individual file paths within that folder. An attacker can bypass this check by naming a file ValidPluginName/../../shell.php. The explode function will see ValidPluginName as the root folder, satisfying the count($folders) != 1 check. However, during extraction, the ../../ sequence triggers a path traversal, allowing the file to be written anywhere the web server has permissions the root directory. This issue is fixed in version 2026.1.

CVSS v3
7.2
EG Score
7.2HIGHmedium confidence
EG Risk
48
EG Risk 48/100

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)
Severity72% × 45%
The EG Score, 7.2 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.9%
EPSS %ILE
57th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

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

Exploitation public PoC (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.

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

May 18, 2026

Last Modified

July 24, 2026

Advisory Details (2)

Auto-updated Jun 11, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Remote Code Execution (RCE) via Zip Slip in Plugin Upload Mechanism · Advisory · NeoRazorX/facturascripts · GitHub

https://github.com/NeoRazorX/facturascripts/security/advisories/GHSA-3pgc-xqg9-cfr6
GitHub commit Patch Available

commit 2dda7c6f3b24 (NeoRazorX/facturascripts)

Patch available: NeoRazorX/facturascripts v2026 (contains commit 2dda7c6f3b24)

https://github.com/NeoRazorX/facturascripts/commit/2dda7c6f3b241fa84a0629166783720b882725fd

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
composerfacturascripts/facturascripts—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
facturascripts/facturascripts2018.03 ... v2025.8 (56 versions)
  • every version through 2025.71: no fix on record
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 26× 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 96 of 272 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 176 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  3. 2026-10-12 16:17 UTCEG score recompute
  4. 2026-10-11 19:59 UTCEG score recompute
  5. 2026-10-11 17:12 UTCEG score recompute
  6. 2026-10-11 14:43 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  10. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  11. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  12. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  13. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  14. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  16. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  17. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  18. 2026-09-30 03:39 UTCOSV refresh
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  20. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  21. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  22. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  23. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  24. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
Show 71 more
  1. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  3. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  4. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-09-11 05:53 UTCOSV refresh
  6. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  9. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  13. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  14. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  17. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-08-23 17:11 UTCEG score recompute
  21. 2026-08-23 17:11 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  22. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  23. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  24. 2026-08-21 23:41 UTCEG score recompute
  25. 2026-08-21 23:41 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  26. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  27. 2026-08-20 19:08 UTCEG score recompute
  28. 2026-08-20 19:08 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  29. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  30. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  31. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-08-17 10:03 UTCEG score recompute
  33. 2026-08-17 10:03 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  34. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  35. 2026-08-16 03:38 UTCEG score recompute
  36. 2026-08-16 03:38 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  37. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  38. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  39. 2026-08-14 14:46 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  40. 2026-08-14 02:11 UTCEG score recompute
  41. 2026-08-14 02:10 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  42. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  43. 2026-08-13 03:14 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  44. 2026-08-12 14:38 UTCEG score recompute
  45. 2026-08-12 14:38 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  46. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  47. 2026-08-11 13:55 UTCEG score recompute
  48. 2026-08-11 13:55 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  49. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  50. 2026-08-11 00:41 UTCEG score recompute
  51. 2026-08-11 00:41 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  52. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  53. 2026-08-10 02:49 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  54. 2026-08-09 14:14 UTCEG score recompute
  55. 2026-08-09 14:14 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  56. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  57. 2026-08-09 01:38 UTCEG score recompute
  58. 2026-08-09 01:38 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  59. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  60. 2026-08-08 02:24 UTCEG score recompute
  61. 2026-08-08 02:24 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  62. 2026-08-07 13:48 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  63. 2026-08-07 01:13 UTCEG score recompute
  64. 2026-08-07 01:13 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  65. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  66. 2026-08-06 10:02 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  67. 2026-08-05 21:24 UTCEG score recompute
  68. 2026-08-05 21:24 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2
  69. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  70. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  71. 2026-08-04 05:39 UTCGHSA enrichmentGHSA-3pgc-xqg9-cfr6 · GitHub severity HIGH · GitHub CVSS 7.2

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Frequently asked(5)

What is CVE-2026-27891?
CVE-2026-27891 is a high-severity vulnerability; its CVE record was published on May 18, 2026. FacturaScripts is an open source accounting and invoicing software. Versions 2026 and below contain a critical vulnerability in the Plugins::add() function. The system fails to properly validate the file paths within uploaded ZIP archives. This allows an attacker to perform a Zip Slip attack,…
When was the CVE record for CVE-2026-27891 published?
The CVE record for CVE-2026-27891 was published on May 18, 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 24, 2026; the record at its source may have been updated since.
Is CVE-2026-27891 actively exploited?
CVE-2026-27891 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (57th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-27891?
CVE-2026-27891 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-27891?
A fix for CVE-2026-27891 is available: update to the fixed version the vendor names in its advisory.

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