CVE-2026-33431

MEDIUMNVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated

Also known asEUVD-2026-23966 (ENISA EUVD)Source: ENISA EUVD

6.5EG
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: 0.4%CVSS: 6.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.4, the POST /config//show API endpoint accepts a configver parameter that is directly appended to a base directory path to construct a local file path, which is subsequently opened and its contents returned to the caller. The existing path traversal guard only inspects the base directory variable (which is never user-controlled) and entirely ignores the user-supplied configver value. An authenticated attacker can supply a configver value containing ../ sequences to escape the intended directory and read arbitrary files accessible to the web application process. Version 8.2.6.4 contains a patch for the issue.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
60
EG Risk 60/100

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)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 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.
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 public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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
0.4%
EPSS %ILE
33rd
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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS. 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; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

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 public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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; 60 days if it is not.

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

April 20, 2026

Last Modified

April 24, 2026

Advisory Details (2)

Auto-updated Jun 14, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Authenticated Arbitrary File Read via Path Traversal in Config Version Viewer · Advisory · roxy-wi/roxy-wi · GitHub

https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-w3c9-36jf-qrw4
GitHub commit Patch Available

commit d4d100067dd0 (roxy-wi/roxy-wi)

Patch available: roxy-wi/roxy-wi v8.2.6.4 (contains commit d4d100067dd0)

https://github.com/roxy-wi/roxy-wi/commit/d4d100067dd0ee04317f05d3b51be8fcfdc3f802

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 37× 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 208 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 112 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-25 14:34 UTCEG score recompute
  8. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  9. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-23 03:31 UTCEG score recompute
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-18 03:46 UTCEG score recompute
  17. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  19. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  20. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  22. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  23. 2026-10-12 16:13 UTCEG score recompute
  24. 2026-10-11 19:55 UTCEG score recompute
  25. 2026-10-11 17:09 UTCEG score recompute
Show 71 more
  1. 2026-10-11 14:36 UTCEG score recompute
  2. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-10 18:33 UTCOSV refresh
  5. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  8. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  9. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-09-21 05:49 UTCOSV refresh
  19. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  21. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  24. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  26. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  27. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  28. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  29. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  30. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  31. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  33. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  34. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  35. 2026-09-02 03:39 UTCOSV refresh
  36. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  37. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  38. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  39. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  40. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  41. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  42. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  43. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  44. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  45. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  46. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  47. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  48. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  49. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  50. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  51. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  52. 2026-08-16 06:22 UTCEG score recompute
  53. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  54. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  55. 2026-08-14 04:32 UTCEG score recompute
  56. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  57. 2026-08-12 22:37 UTCEG score recompute
  58. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  59. 2026-08-12 00:37 UTCEG score recompute
  60. 2026-08-11 02:29 UTCEG score recompute
  61. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  62. 2026-08-10 01:48 UTCEG score recompute
  63. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  64. 2026-08-09 03:45 UTCEG score recompute
  65. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  66. 2026-08-07 19:17 UTCEG score recompute
  67. 2026-08-06 21:16 UTCEG score recompute
  68. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  69. 2026-08-05 23:13 UTCEG score recompute
  70. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  71. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.4% · 31st percentile

Frequently asked(5)

What is CVE-2026-33431?
CVE-2026-33431 is a medium-severity vulnerability; its CVE record was published on April 20, 2026. Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.4, the POST /config/<service>/show API endpoint accepts a configver parameter that is directly appended to a base directory path to construct a local file path, which is subsequently opened…
When was the CVE record for CVE-2026-33431 published?
The CVE record for CVE-2026-33431 was published on April 20, 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 April 24, 2026; the record at its source may have been updated since.
Is CVE-2026-33431 actively exploited?
CVE-2026-33431 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-33431?
CVE-2026-33431 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-33431?
A fix for CVE-2026-33431 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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