CVE-2026-41235

HIGHPre-NVD 8.68.8
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than the CVSS score beside it.

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-29. A secondary CVSS source baseline 8.6; sources differ by 0.2.

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

Also known asEUVD-2026-34314 (ENISA EUVD) · GHSA-gcv3-5v9q-fmhh (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.6Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Froxlor is open source server administration software. Version 2.3.6 lets administrators configure system.available_shells as the approved shell list that customers may assign to FTP users. However, the server-side FTP account handlers do not enforce that whitelist when processing add or edit requests. As a result, an authenticated customer with shell delegation enabled can submit an arbitrary shell such as /bin/bash even when the panel UI only offers more restricted choices. In deployments that use the default nssextrausers integration, the attacker-controlled shell is then propagated into the system account database, leading to real host shell access. Version 2.3.7 fixes the issue.

CVSS
8.6
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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
0.2%
EPSS %ILE
13th
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 (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-07). 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, Track* at medium and Attend at high mission impact.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, 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.

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

May 29, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jun 4, 2026
Patch available. Sources: github, github_release.
GitHub release Patch Available

froxlor security release 2.3.7

Patch available: froxlor/froxlor 2.3.7

https://github.com/froxlor/froxlor/releases/tag/2.3.7
GitHub advisoryMentions a patch (unverified)

Authorization bypass in FTP shell assignment via missing server-side `available_shells` enforcement · Advisory · froxlor/froxlor · GitHub

https://github.com/froxlor/froxlor/security/advisories/GHSA-gcv3-5v9q-fmhh

Vendor Advisories for CVE-2026-41235(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
composerfroxlor/froxlor @ 2.3.7 (fixes = 2.3.6)—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
froxlor/froxlor2.3.6
  • 2.3.6 up to 2.3.7: fixed in 2.3.7
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 → 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 197 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 97 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-11-11 16:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  3. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  4. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-11-08 16:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-11-07 18:13 UTCEchelonGraph re-scored
  7. 2026-11-07 18:13 UTCGHSA enrichmentGHSA-gcv3-5v9q-fmhh · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-11-06 16:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-11-05 16:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  10. 2026-11-04 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  11. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  13. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  14. 2026-11-01 07:51 UTCGHSA enrichmentGHSA-gcv3-5v9q-fmhh · GitHub severity HIGH · GitHub CVSS 8.8
  15. 2026-11-01 07:51 UTCEchelonGraph re-scored▲ 0.20
  16. 2026-10-31 17:13 UTCEchelonGraph re-scored
  17. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  19. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  20. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  22. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  23. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-10-25 14:30 UTCEchelonGraph re-scored
  25. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 29th percentile
Show 75 more
  1. 2026-10-24 15:38 UTCEchelonGraph re-scored
  2. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  3. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  6. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  7. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  8. 2026-10-18 03:42 UTCEchelonGraph re-scored
  9. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  10. 2026-10-17 14:38 UTCEchelonGraph re-scored
  11. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  12. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  13. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  14. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  15. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  16. 2026-10-12 16:08 UTCEchelonGraph re-scored
  17. 2026-10-11 19:51 UTCEchelonGraph re-scored
  18. 2026-10-11 17:04 UTCEchelonGraph re-scored
  19. 2026-10-11 14:30 UTCEchelonGraph re-scored
  20. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  22. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  23. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  24. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  25. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  26. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  27. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  28. 2026-10-03 14:48 UTCOSV refresh
  29. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  30. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  31. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  32. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  33. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  34. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  35. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  36. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  37. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  39. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  40. 2026-09-14 06:25 UTCEchelonGraph re-scored
  41. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  42. 2026-09-13 01:06 UTCOSV refresh
  43. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  44. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  46. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  47. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  48. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  50. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  52. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  53. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  54. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  55. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  57. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  58. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  60. 2026-08-25 04:20 UTCEchelonGraph re-scored
  61. 2026-08-23 14:13 UTCEchelonGraph re-scored
  62. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  63. 2026-08-21 15:10 UTCEchelonGraph re-scored
  64. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  65. 2026-08-20 10:27 UTCEchelonGraph re-scored
  66. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  67. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  68. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  69. 2026-08-17 06:53 UTCEchelonGraph re-scored
  70. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  71. 2026-08-16 06:13 UTCEchelonGraph re-scored
  72. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  73. 2026-08-15 18:57 UTCEchelonGraph re-scored
  74. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  75. 2026-08-12 21:23 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-41235?
CVE-2026-41235 is a high-severity vulnerability; its CVE record was published on May 29, 2026. Froxlor is open source server administration software. Version 2.3.6 lets administrators configure system.available_shells as the approved shell list that customers may assign to FTP users. However, the server-side FTP account handlers do not enforce that whitelist when processing add or edit…
When was the CVE record for CVE-2026-41235 published?
The CVE record for CVE-2026-41235 was published on May 29, 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 22, 2026; the record at its source may have been updated since.
Is CVE-2026-41235 actively exploited?
CVE-2026-41235 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-41235?
CVE-2026-41235 has a CVSS base score of 8.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending). EchelonGraph synthesises a secondary CVSS source + FIRST EPSS + GHSA into a combined EG score of 8.8 (HIGH).
How do I remediate CVE-2026-41235?
A fix for CVE-2026-41235 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-41235 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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