CVE-2026-44015

CRITICALNVD 9.99.9
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.3% (24th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 8.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-04-29) is not newer than that change (2026-10-26), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this weekElevated

Also known asEUVD-2026-29837 (ENISA EUVD) · GHSA-wr32-99hh-6f35 (GitHub Security Advisories)Source: ENISA EUVD

9.9EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (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: 0.3%CVSS: 9.9Exploit: No code on recordExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware forwards these requests to the attacker-specified internal address, bypassing network segmentation and enabling access to services bound to localhost or internal networks.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
61
EG Risk 61/100

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)
Severity99% × 45%
Impact severity (EG Severity): CVSS 9.9 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 or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
24th
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 (9.9): severity, escalated by confirmed exploitation. This CVE's 9.9 is its impact severity (EG Severity), not escalated.

EG Severity
9.9 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-29). 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: 60 days if the affected system is publicly exposed; Fix on system upgrade 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; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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)60 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 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

May 12, 2026

Last Modified

October 26, 2026

Advisory Details (1)

Auto-updated Oct 26, 2026
🔬 Proof of concept available. No fix on record yet. Sources: github.
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

Server-Side Request Forgery (SSRF) via Cluster Proxy Middleware Allows Access to Internal Services · Advisory · 0xJacky/nginx-ui · GitHub

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-wr32-99hh-6f35

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
gogithub.com/0xJacky/Nginx-UI—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)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/0xJacky/Nginx-UI—
  • every version through 2.3.4: no fix on record
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 50× 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 253 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 153 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-30 08:41 UTCEG score recompute
  2. 2026-10-30 08:41 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  3. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  4. 2026-10-29 10:17 UTCEG score recompute
  5. 2026-10-29 10:17 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  6. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  7. 2026-10-28 11:53 UTCEG score recompute
  8. 2026-10-28 11:53 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  10. 2026-10-27 13:28 UTCEG score recompute
  11. 2026-10-27 13:28 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  12. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-10-26 14:36 UTCEG score recompute▲ 1.40
  14. 2026-10-26 14:35 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  15. 2026-10-26 14:25 UTCNVD updateCVSS v3 → 9.9 · severity → CRITICAL
  16. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  17. 2026-10-25 14:28 UTCEG score recompute
  18. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-10-24 16:20 UTCEG score recompute
  20. 2026-10-24 16:20 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  21. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  23. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  25. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
Show 75 more
  1. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-18 03:39 UTCEG score recompute
  3. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  4. 2026-10-17 14:05 UTCEG score recompute
  5. 2026-10-17 14:05 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  6. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  7. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  8. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-12 16:05 UTCEG score recompute
  12. 2026-10-11 19:47 UTCEG score recompute
  13. 2026-10-11 17:02 UTCEG score recompute
  14. 2026-10-11 14:27 UTCEG score recompute
  15. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  16. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  26. 2026-09-30 05:58 UTCOSV refresh
  27. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  28. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  29. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  30. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  31. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  32. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  33. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  34. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  35. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  36. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  37. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  38. 2026-09-11 10:23 UTCOSV refresh
  39. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  40. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  41. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  42. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  43. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  44. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  46. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  47. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  48. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  49. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  50. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  51. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  52. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  53. 2026-08-23 18:05 UTCEG score recompute
  54. 2026-08-23 18:05 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  55. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  56. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  57. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  58. 2026-08-20 21:36 UTCEG score recompute
  59. 2026-08-20 21:36 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  60. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  61. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  62. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  63. 2026-08-17 10:46 UTCEG score recompute
  64. 2026-08-17 10:46 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  65. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  66. 2026-08-16 04:10 UTCEG score recompute
  67. 2026-08-16 04:10 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  68. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  69. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  70. 2026-08-14 14:55 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  71. 2026-08-14 02:39 UTCEG score recompute
  72. 2026-08-14 02:39 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  73. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  74. 2026-08-13 04:13 UTCGHSA enrichmentGHSA-wr32-99hh-6f35 · GitHub severity HIGH · GitHub CVSS 8.5
  75. 2026-08-12 15:56 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-44015?
CVE-2026-44015 is a critical-severity vulnerability; its CVE record was published on May 12, 2026. Nginx UI is a web user interface for the Nginx web server. In 2.3.4 and earlier, an authenticated user can perform Server-Side Request Forgery (SSRF) by creating a cluster node pointing to an arbitrary internal URL and then sending API requests with the X-Node-ID header. The Proxy middleware…
When was the CVE record for CVE-2026-44015 published?
The CVE record for CVE-2026-44015 was published on May 12, 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 October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-44015 actively exploited?
CVE-2026-44015 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (24th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44015?
CVE-2026-44015 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-44015?
No fix for CVE-2026-44015 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

Dependency Blast Radius

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