CVE-2026-6266

HIGHPre-NVD 8.38.3
EchelonGraph scoreMEDIUM confidence

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

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-05-04. The CNA's CVSS baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 4 sources updated this week
8.3EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in the AAP gateway. The user auto-link strategy, introduced in AAP 2.6, automatically links an external Identity Provider (IDP) identity to an existing AAP user account based on email matching without verifying email ownership. This allows a remote attacker to potentially hijack a victim's account or gain unauthorized access to other accounts, including administrative accounts, by manipulating the IDP-provided email.

CVSS v3
8.3
EG Score
8.3HIGHmedium confidence
EG Risk
38
EG Risk 38/100

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 (value × EchelonGraph’s weight)
Severity83% × 45%
The EG Score, 8.3 of 10.
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
46th
KEV
Not listed

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 4, 2026

Last Modified

August 27, 2026

Advisory Details (3)

Auto-updated May 4, 2026
Patch available. Sources: redhat.
Red HatMentions a patch (unverified)

2458142 – (CVE-2026-6266) CVE-2026-6266 aap-controller: aap-gateway: Account hijacking and unauthorized access via unverified email linking

https://bugzilla.redhat.com/show_bug.cgi?id=2458142
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-6266
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:13508

Vendor Advisories for CVE-2026-6266(4)

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

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatpython3.12-django-ansible-base-0:2.5.20260422-2.el9ap2026-05-04redhat
redhatpython3.12-django-ansible-base-0:2.6.20260422-1.el9ap2026-05-04redhat
redhatansible-automation-platform-26/gateway-rhel9:17773111202026-05-04redhat

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 14× 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 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 98 of 279 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 181 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  2. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  3. 2026-10-13 12:16 UTCEG score recompute
  4. 2026-10-13 12:16 UTCVendor advisory
  5. 2026-10-13 12:16 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  6. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  7. 2026-10-12 15:49 UTCEG score recompute
  8. 2026-10-11 19:34 UTCEG score recompute
  9. 2026-10-11 16:49 UTCEG score recompute
  10. 2026-10-11 14:10 UTCEG score recompute
  11. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  12. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  20. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  23. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  24. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 45th percentile
  25. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 45th percentile
Show 73 more
  1. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  13. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  14. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  15. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  16. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  17. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  18. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  19. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  21. 2026-08-27 13:02 UTCEG score recompute
  22. 2026-08-27 13:02 UTCVendor advisory
  23. 2026-08-27 13:02 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  24. 2026-08-26 17:45 UTCEG score recompute
  25. 2026-08-26 17:45 UTCVendor advisory
  26. 2026-08-26 17:45 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  27. 2026-08-26 16:05 UTCEG score recompute
  28. 2026-08-26 16:05 UTCVendor advisory
  29. 2026-08-26 16:04 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  30. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-08-23 21:34 UTCEG score recompute
  33. 2026-08-23 21:34 UTCVendor advisory
  34. 2026-08-23 21:34 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  37. 2026-08-20 22:56 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  38. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  39. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  40. 2026-08-18 12:19 UTCEG score recompute
  41. 2026-08-18 12:19 UTCVendor advisory
  42. 2026-08-18 12:19 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  43. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  44. 2026-08-17 12:12 UTCEG score recompute
  45. 2026-08-17 12:12 UTCVendor advisory
  46. 2026-08-17 12:12 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  47. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  48. 2026-08-16 05:04 UTCEG score recompute
  49. 2026-08-16 05:04 UTCVendor advisory
  50. 2026-08-16 05:04 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  51. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  52. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  53. 2026-08-14 15:52 UTCVendor advisory
  54. 2026-08-14 15:52 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  55. 2026-08-14 03:39 UTCEG score recompute
  56. 2026-08-14 03:39 UTCVendor advisory
  57. 2026-08-14 03:39 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  58. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  59. 2026-08-13 06:37 UTCVendor advisory
  60. 2026-08-13 06:37 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  61. 2026-08-12 17:19 UTCEG score recompute
  62. 2026-08-12 17:19 UTCVendor advisory
  63. 2026-08-12 17:19 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  64. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  65. 2026-08-11 16:10 UTCEG score recompute
  66. 2026-08-11 16:10 UTCVendor advisory
  67. 2026-08-11 16:10 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  68. 2026-08-11 01:41 UTCEG score recompute
  69. 2026-08-11 01:41 UTCVendor advisory
  70. 2026-08-11 01:41 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3
  71. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  72. 2026-08-10 03:11 UTCVendor advisory
  73. 2026-08-10 03:11 UTCGHSA enrichmentGHSA-6hqg-wj7g-983r · GitHub severity HIGH · GitHub CVSS 8.3

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Frequently asked(5)

What is CVE-2026-6266?
CVE-2026-6266 is a high-severity vulnerability; its CVE record was published on May 4, 2026. A flaw was found in the AAP gateway. The user auto-link strategy, introduced in AAP 2.6, automatically links an external Identity Provider (IDP) identity to an existing AAP user account based on email matching without verifying email ownership. This allows a remote attacker to potentially hijack a…
When was CVE-2026-6266 made public?
CVE-2026-6266 was made public on May 4, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on May 4, 2026. EchelonGraph's copy of the record carries a last-modified date of August 27, 2026; the record at its source may have been updated since.
Is CVE-2026-6266 actively exploited?
CVE-2026-6266 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-6266?
CVE-2026-6266 has a CVSS base score of 8.3 (the CNA's own assessment, by redhat; NVD's own analysis pending).
How do I remediate CVE-2026-6266?
A fix for CVE-2026-6266 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-6266 are linked in the Vendor Advisories panel on this page.

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