CVE-2026-11326

MEDIUMPre-NVD 6.06.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 88% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.0Exploit: None knownExposed: 0

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

OpenAI Atlas before 1.2025.288.15 exposed privileged browser APIs to web content on *.openai.com origins. A cross-site scripting vulnerability in forum.openai.com could be used to access these functions, allowing access to browser history information and the ability to open or close tabs. OpenAI Atlas 1.2025.288.15 narrows access to these APIs to *.chatgpt.com; users should upgrade to 1.2025.288.15 or later.

CVSS v3
6.0
EG Score
6.0(medium)
EG Risk
27(Track)
EG Risk 27/100SSVC: 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
Severity60% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

June 5, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
No patch confirmed yet.
generic

Pwning OpenAI Atlas Through Exposed Browser Internals | Hacktron AI

https://www.hacktron.ai/blog/hacking-openai-atlas-browser

Vendor Advisories for CVE-2026-11326(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 35× 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.

Showing the most recent 100 of 193 total refreshes for this CVE.

  1. 2026-09-16 05:14 UTCEPSS rescore
  2. 2026-09-14 05:04 UTCEG score recompute
  3. 2026-09-14 05:04 UTCGHSA enrichment
  4. 2026-09-13 16:46 UTCEPSS rescore
  5. 2026-09-12 15:00 UTCEPSS rescore
  6. 2026-09-11 14:52 UTCEPSS rescore
  7. 2026-09-11 09:36 UTCEPSS rescore
  8. 2026-09-10 09:34 UTCEPSS rescore
  9. 2026-09-08 22:00 UTCEPSS rescore
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-04 05:06 UTCEPSS rescore
  13. 2026-09-02 14:11 UTCEPSS rescore
  14. 2026-09-01 13:53 UTCEPSS rescore
  15. 2026-09-01 04:39 UTCEPSS rescore
  16. 2026-08-30 19:17 UTCEPSS rescore
  17. 2026-08-30 01:21 UTCEPSS rescore
  18. 2026-08-28 21:40 UTCEPSS rescore
  19. 2026-08-27 14:24 UTCEPSS rescore
  20. 2026-08-25 13:48 UTCEPSS rescore
  21. 2026-08-25 02:06 UTCEG score recompute
  22. 2026-08-25 02:06 UTCGHSA enrichment
  23. 2026-08-23 12:28 UTCEG score recompute
  24. 2026-08-23 12:28 UTCGHSA enrichment
  25. 2026-08-23 00:19 UTCEPSS rescore
Show 75 more
  1. 2026-08-21 23:48 UTCEPSS rescore
  2. 2026-08-21 08:23 UTCEG score recompute
  3. 2026-08-21 08:23 UTCGHSA enrichment
  4. 2026-08-20 22:55 UTCEPSS rescore
  5. 2026-08-20 09:43 UTCEG score recompute
  6. 2026-08-20 09:43 UTCGHSA enrichment
  7. 2026-08-19 17:03 UTCEPSS rescore
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-17 09:43 UTCEG score recompute
  10. 2026-08-17 09:43 UTCGHSA enrichment
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 11:07 UTCEG score recompute
  13. 2026-08-16 11:07 UTCGHSA enrichment
  14. 2026-08-16 02:14 UTCEPSS rescore
  15. 2026-08-15 12:31 UTCGHSA enrichment
  16. 2026-08-14 08:00 UTCEG score recompute
  17. 2026-08-14 08:00 UTCGHSA enrichment
  18. 2026-08-13 22:00 UTCEPSS rescore
  19. 2026-08-13 09:24 UTCEG score recompute
  20. 2026-08-13 09:24 UTCGHSA enrichment
  21. 2026-08-12 13:50 UTCEPSS rescore
  22. 2026-08-12 10:48 UTCEG score recompute
  23. 2026-08-12 10:48 UTCGHSA enrichment
  24. 2026-08-11 13:42 UTCEPSS rescore
  25. 2026-08-11 12:11 UTCEG score recompute
  26. 2026-08-11 12:11 UTCGHSA enrichment
  27. 2026-08-10 23:59 UTCEPSS rescore
  28. 2026-08-10 13:34 UTCGHSA enrichment
  29. 2026-08-09 14:49 UTCEG score recompute
  30. 2026-08-09 14:49 UTCGHSA enrichment
  31. 2026-08-09 13:46 UTCEPSS rescore
  32. 2026-08-08 16:37 UTCEPSS rescore
  33. 2026-08-08 16:13 UTCGHSA enrichment
  34. 2026-08-07 17:35 UTCEG score recompute
  35. 2026-08-07 17:35 UTCGHSA enrichment
  36. 2026-08-06 18:58 UTCEG score recompute
  37. 2026-08-06 18:58 UTCGHSA enrichment
  38. 2026-08-06 13:46 UTCEPSS rescore
  39. 2026-08-05 20:21 UTCEG score recompute
  40. 2026-08-05 20:21 UTCGHSA enrichment
  41. 2026-08-05 19:17 UTCEPSS rescore
  42. 2026-08-04 17:32 UTCEG score recompute
  43. 2026-08-04 17:32 UTCGHSA enrichment
  44. 2026-08-04 15:09 UTCEPSS rescore
  45. 2026-08-04 10:38 UTCEPSS rescore
  46. 2026-08-03 15:27 UTCEG score recompute
  47. 2026-08-03 15:27 UTCGHSA enrichment
  48. 2026-08-03 10:35 UTCEPSS rescore
  49. 2026-08-02 10:03 UTCEG score recompute
  50. 2026-08-02 10:03 UTCGHSA enrichment
  51. 2026-08-02 02:26 UTCEPSS rescore
  52. 2026-08-01 11:26 UTCEG score recompute
  53. 2026-08-01 11:26 UTCGHSA enrichment
  54. 2026-08-01 04:15 UTCEPSS rescore
  55. 2026-07-31 05:16 UTCEG score recompute
  56. 2026-07-31 05:16 UTCGHSA enrichment
  57. 2026-07-30 16:27 UTCEPSS rescore
  58. 2026-07-30 01:30 UTCEPSS rescore
  59. 2026-07-29 09:40 UTCEG score recompute
  60. 2026-07-29 09:40 UTCGHSA enrichment
  61. 2026-07-28 15:36 UTCEPSS rescore
  62. 2026-07-28 08:42 UTCEG score recompute
  63. 2026-07-28 08:42 UTCGHSA enrichment
  64. 2026-07-27 14:13 UTCEPSS rescore
  65. 2026-07-27 08:40 UTCEG score recompute
  66. 2026-07-27 08:40 UTCGHSA enrichment
  67. 2026-07-26 14:54 UTCEPSS rescore
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-26 07:23 UTCEG score recompute
  70. 2026-07-26 07:23 UTCGHSA enrichment
  71. 2026-07-25 14:17 UTCEPSS rescore
  72. 2026-07-23 14:18 UTCEPSS rescore
  73. 2026-07-23 03:04 UTCEG score recompute
  74. 2026-07-22 14:08 UTCEPSS rescore
  75. 2026-07-21 15:24 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11326?
CVE-2026-11326 is a medium vulnerability published on June 5, 2026. OpenAI Atlas before 1.2025.288.15 exposed privileged browser APIs to web content on .openai.com origins. A cross-site scripting vulnerability in forum.openai.com could be used to access these functions, allowing access to browser history information and the ability to open or close tabs. OpenAI…
When was CVE-2026-11326 disclosed?
CVE-2026-11326 was first published in the National Vulnerability Database on June 5, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11326 actively exploited?
CVE-2026-11326 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 88.2% of all scored CVEs.
What is the CVSS score of CVE-2026-11326?
CVE-2026-11326 has a CVSS v3 base score of 6.0 (NVD).
How do I remediate CVE-2026-11326?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11326, 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-2026-11326

Explore →

Is Your Infrastructure Affected by CVE-2026-11326?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs