A flaw was found in the OpenShift Router. When a Route has insecureEdgeTerminationPolicy set to Allow, the HTTP frontend does not remove X-SSL-Client-* headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests with crafted X-SSL-Client-* headers. As a result, backends relying on these headers for mutual TLS (Transport Layer Security) authentication can be bypassed, enabling the attacker to impersonate client certificate identities.
CVE-2026-46579
“—” beside the score: it is equal to NVD's CVSS score.
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 7.4 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 2026-05-29) is not newer than that change (2026-09-10), so it does not.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 34EG Risk 34/100
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)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.6% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.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 none (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. - EPSS PROB
- 0.6%
- EPSS %ILE
- 48th
- 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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). 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: 14 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).
A fix is available. Apply it within your standard update timelines.
Exploitation none (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 29, 2026
Last Modified
September 10, 2026
Advisory Details (2)
Auto-updated Jun 6, 20262483181 – (CVE-2026-46579) CVE-2026-46579 openshift/router: openshift/router: mTLS client certificate spoofing via unstripped X-SSL-Client headers on HTTP frontend
https://bugzilla.redhat.com/show_bug.cgi?id=2483181cve-details
https://access.redhat.com/security/cve/CVE-2026-46579Vendor Advisories for CVE-2026-46579(12)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:47728Red Hat Product SecurityCritical
Red Hat Security Advisory: OpenShift Container Platform 4.17.56 bug fix and security update
- RHSA-2026:47703Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.12.95 bug fix and security update
- RHSA-2026:43227Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.15.67 bug fix and security update
- RHSA-2026:43253Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.14.70 bug fix and security update
- RHSA-2026:43331Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.16.67 bug fix and security update
- RHSA-2026:40022Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.13.69 bug fix and security update
- RHSA-2026:40828Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.18.49 bug fix and security update
- RHSA-2026:37580Red Hat Product SecurityHigh
Red Hat Security Advisory: OpenShift Container Platform 4.19.38 bug fix and security update
- +4 more
Patch Availability(11)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | openshift4/ose-haproxy-router:1784323891 | 2026-08-06 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1784321465 | 2026-08-06 | redhat |
| redhat | openshift4/ose-haproxy-router:1784587649 | 2026-07-30 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1784331638 | 2026-07-30 | redhat |
| redhat | openshift4/ose-haproxy-router:1784580646 | 2026-07-30 | redhat |
| redhat | openshift4/ose-haproxy-router:1784056734 | 2026-07-23 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1783719377 | 2026-07-22 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1783445642 | 2026-07-15 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1781639027 | 2026-06-23 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1781552170 | 2026-06-23 | redhat |
| redhat | openshift4/ose-haproxy-router-rhel9:1781643967 | 2026-06-23 | redhat |
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 10× in last 7d / 32× 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 487 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 387 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-18 03:37 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-17 13:16 UTCEG score recompute
- 2026-10-17 13:16 UTCVendor advisory
- 2026-10-17 13:16 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-12 16:02 UTCEG score recompute
- 2026-10-11 19:45 UTCEG score recompute
- 2026-10-11 17:00 UTCEG score recompute
- 2026-10-11 14:25 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 47th percentile
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- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.6% · 47th percentile
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-14 06:28 UTCEG score recompute
- 2026-09-14 06:28 UTCVendor advisory
- 2026-09-14 06:28 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-10 13:38 UTCVendor advisory
- 2026-09-10 13:38 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-10 12:26 UTCEG score recompute
- 2026-09-10 12:26 UTCVendor advisory
- 2026-09-10 12:26 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-09 15:32 UTCVendor advisory
- 2026-09-09 15:32 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-09 14:21 UTCVendor advisory
- 2026-09-09 14:21 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-09 12:38 UTCEG score recompute
- 2026-09-09 12:38 UTCVendor advisory
- 2026-09-09 12:38 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-08 10:59 UTCVendor advisory
- 2026-09-08 10:59 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-08 10:30 UTCVendor advisory
- 2026-09-08 10:30 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-08 09:56 UTCVendor advisory
- 2026-09-08 09:56 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-08 09:30 UTCVendor advisory
- 2026-09-08 09:30 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-07 17:15 UTCVendor advisory
- 2026-09-07 17:15 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-07 16:26 UTCEG score recompute
- 2026-09-07 16:26 UTCVendor advisory
- 2026-09-07 16:26 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-07 13:50 UTCVendor advisory
- 2026-09-07 13:49 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-07 12:38 UTCVendor advisory
- 2026-09-07 12:37 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-06 18:21 UTCVendor advisory
- 2026-09-06 18:21 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-06 17:24 UTCVendor advisory
- 2026-09-06 17:24 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-06 16:39 UTCEG score recompute
- 2026-09-06 16:39 UTCVendor advisory
- 2026-09-06 16:39 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-05 12:45 UTCVendor advisory
- 2026-09-05 12:44 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-05 12:22 UTCVendor advisory
- 2026-09-05 12:22 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-05 11:58 UTCEG score recompute
- 2026-09-05 11:58 UTCVendor advisory
- 2026-09-05 11:58 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-08-26 16:23 UTCEG score recompute
- 2026-08-26 16:23 UTCVendor advisory
- 2026-08-26 16:23 UTCGHSA enrichmentGHSA-ccmj-8c3p-4qwj · GitHub severity HIGH · GitHub CVSS 7.4
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat:RHSA-2026:27063 · redhat:RHSA-2026:27044
Frequently asked(5)
What is CVE-2026-46579?
When was CVE-2026-46579 made public?
Is CVE-2026-46579 actively exploited?
What is the CVSS score of CVE-2026-46579?
How do I remediate CVE-2026-46579?
Dependency Blast Radius
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