CVE-2026-12382

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-07-15. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the AAP Gateway Envoy proxy configuration. The non-mTLS route to EDA event streams does not remove the Subject HTTP header from client requests, despite the source code defining requestHeadersToRemove for this header. An unauthenticated remote attacker can inject a spoofed Subject header matching a legitimate client certificate DN to bypass mTLS authentication and inject arbitrary events into protected EDA event streams.

CVSS v3
8.2
EG Score
8.2(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity82% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 21, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
Patch available. Sources: redhat.
redhat

2489126 – (CVE-2026-12382) CVE-2026-12382 aap-gateway: missing requestHeadersToRemove allows mTLS bypass via Subject header spoofing

https://bugzilla.redhat.com/show_bug.cgi?id=2489126
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12382

Vendor Advisories for CVE-2026-12382(5)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatansible-automation-platform-27/gateway-rhel9:17839194862026-07-20redhat
redhatautomation-gateway-0:2.5.20260715-1.el9ap2026-07-20redhat
redhatansible-automation-platform-26/gateway-rhel9:17773111202026-05-04redhat
redhatautomation-gateway-0:2.6.20260422-1.el9ap2026-05-04redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-27 00:22 UTCEG score recompute
  2. 2026-07-27 00:22 UTCVendor advisory
  3. 2026-07-27 00:22 UTCGHSA enrichment
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-26 11:33 UTCEG score recompute
  7. 2026-07-26 11:33 UTCVendor advisory
  8. 2026-07-26 11:33 UTCGHSA enrichment
  9. 2026-07-25 14:17 UTCEPSS rescore
  10. 2026-07-24 14:17 UTCEPSS rescore
  11. 2026-07-23 14:18 UTCEPSS rescore
  12. 2026-07-23 03:05 UTCEG score recompute
  13. 2026-07-22 14:08 UTCEPSS rescore
  14. 2026-07-21 15:24 UTCEPSS rescore
  15. 2026-07-20 17:08 UTCEPSS rescore
  16. 2026-07-19 14:30 UTCEPSS rescore
  17. 2026-07-19 02:28 UTCEPSS rescore
  18. 2026-07-18 10:04 UTCEPSS rescore
  19. 2026-07-16 19:09 UTCVendor advisory
  20. 2026-07-16 19:08 UTCGHSA enrichment
  21. 2026-07-16 17:02 UTCEPSS rescore
  22. 2026-07-16 06:17 UTCGHSA enrichment
  23. 2026-07-15 17:29 UTCEG score recompute
  24. 2026-07-15 17:28 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-12382?
CVE-2026-12382 is a high vulnerability published on July 15, 2026. A flaw was found in the AAP Gateway Envoy proxy configuration. The non-mTLS route to EDA event streams does not remove the Subject HTTP header from client requests, despite the source code defining requestHeadersToRemove for this header. An unauthenticated remote attacker can inject a spoofed…
When was CVE-2026-12382 disclosed?
CVE-2026-12382 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12382 actively exploited?
CVE-2026-12382 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 70.8% of all scored CVEs.
What is the CVSS score of CVE-2026-12382?
CVE-2026-12382 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-12382?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12382, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-12382

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