CVE-2026-11839

CRITICALPre-NVD 9.99.9
EchelonGraph scoreMEDIUM confidence

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

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-11. The CNA's CVSS baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
9.9EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.9Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (TR-CERT (Computer Emergency Response Team of the Republic of Türkiye)) lists Başarsoft Information Technologies Inc. Rotaban versions V2026.06.002 up to but not including V2026.06.003 as affected. No release containing a fix is confirmed on record.

Unrestricted upload of file with dangerous type vulnerability in Başarsoft Information Technologies Inc. Rotaban allows Upload a Web Shell to a Web Server.

This issue affects Rotaban: from V2026.06.002 before V2026.06.003.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
45
EG Risk 45/100

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)
Severity99% × 45%
The EG Score, 9.9 of 10.
Exploitation0.3% × 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: 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
25th
KEV
Not listed

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 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

June 11, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Oct 11, 2026
No fix on record yet.
Web page

T.C. Siber Güvenlik Başkanlığı

https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0367

Vendor Advisories for CVE-2026-11839(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 15× in last 7d / 28× 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 430 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 330 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 10:45 UTCEG score recompute
  2. 2026-10-14 10:45 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  3. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  4. 2026-10-13 09:13 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  5. 2026-10-12 16:37 UTCEG score recompute
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  7. 2026-10-12 09:50 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  8. 2026-10-11 20:13 UTCEG score recompute
  9. 2026-10-11 18:25 UTCEG score recompute
  10. 2026-10-11 14:58 UTCEG score recompute
  11. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  12. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  14. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  15. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  16. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  18. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  19. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  20. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  21. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  22. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  23. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  24. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  25. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
Show 75 more
  1. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  2. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  3. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  4. 2026-09-14 08:32 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  5. 2026-09-14 04:10 UTCEG score recompute
  6. 2026-09-14 04:10 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  7. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  8. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  9. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  10. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  11. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  12. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  13. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  14. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  15. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  16. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  17. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  18. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  19. 2026-08-31 00:04 UTCEG score recompute
  20. 2026-08-31 00:04 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  21. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  22. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  23. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  24. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  25. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  26. 2026-08-25 04:27 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  27. 2026-08-25 00:02 UTCEG score recompute
  28. 2026-08-25 00:02 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  29. 2026-08-23 23:48 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  30. 2026-08-23 19:26 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  31. 2026-08-23 15:05 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  32. 2026-08-23 10:43 UTCEG score recompute
  33. 2026-08-23 10:43 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  34. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  35. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  36. 2026-08-21 22:44 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  37. 2026-08-21 17:53 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  38. 2026-08-21 12:13 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  39. 2026-08-21 06:37 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  40. 2026-08-21 02:08 UTCEG score recompute
  41. 2026-08-21 02:08 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  42. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  43. 2026-08-20 21:27 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  44. 2026-08-20 17:06 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  45. 2026-08-20 08:51 UTCEG score recompute
  46. 2026-08-20 08:51 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  47. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  48. 2026-08-19 14:53 UTCEG score recompute
  49. 2026-08-19 14:53 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  50. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  51. 2026-08-17 12:31 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  52. 2026-08-17 07:49 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  53. 2026-08-17 03:26 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  54. 2026-08-16 23:05 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  55. 2026-08-16 17:15 UTCEG score recompute
  56. 2026-08-16 17:15 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  57. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  58. 2026-08-16 12:54 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  59. 2026-08-16 08:33 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  60. 2026-08-16 04:12 UTCEG score recompute
  61. 2026-08-16 04:12 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  62. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  63. 2026-08-15 23:51 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  64. 2026-08-15 19:28 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  65. 2026-08-15 15:07 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  66. 2026-08-15 10:46 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  67. 2026-08-15 04:53 UTCEG score recompute
  68. 2026-08-15 04:53 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  69. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  70. 2026-08-15 00:22 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  71. 2026-08-14 20:01 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  72. 2026-08-14 15:40 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  73. 2026-08-14 11:19 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  74. 2026-08-14 06:56 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9
  75. 2026-08-14 02:35 UTCGHSA enrichmentGHSA-4r5w-3xv4-56jm · GitHub severity CRITICAL · GitHub CVSS 9.9

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-11839?
CVE-2026-11839 is a critical-severity vulnerability; its CVE record was published on June 11, 2026. Unrestricted upload of file with dangerous type vulnerability in Başarsoft Information Technologies Inc. Rotaban allows Upload a Web Shell to a Web Server. This issue affects Rotaban: from V2026.06.002 before V2026.06.003.
When was CVE-2026-11839 made public?
CVE-2026-11839 was made public on June 11, 2026: that is the date its CVE record's CNA, TR-CERT (Computer Emergency Response Team of the Republic of Türkiye), gives for when the vulnerability was made public. The CVE record itself was published on June 11, 2026. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-11839 actively exploited?
CVE-2026-11839 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-11839?
CVE-2026-11839 has a CVSS base score of 9.9 (the CNA's own assessment, by tr-cert; NVD's own analysis pending).
How do I remediate CVE-2026-11839?
No fix for CVE-2026-11839 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. The CVE record's CNA (TR-CERT (Computer Emergency Response Team of the Republic of Türkiye)) lists Başarsoft Information Technologies Inc. Rotaban versions V2026.06.002 up to but not including V2026.06.003 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-11839 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-11839

Explore →

Is Your Infrastructure Affected by CVE-2026-11839?

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

Book a Demo →Browse All CVEs