CVE-2026-21575

HIGHNVD 8.08.0—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.0 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 75% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
8.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.0Exploit: None knownExposed: 0

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

This High severity RCE (Remote Code Execution) vulnerability was introduced in version 3.4.11 of Sourcetree for Mac and Sourcetree for Windows. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to execute arbitrary code which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires user interaction. Atlassian recommends that Sourcetree for Mac and Sourcetree for Windows customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: * Sourcetree for Mac and Sourcetree for Windows 3.4: Upgrade to a release greater than or equal to 3.4.13 See the release notes (https://www.sourcetreeapp.com/download-archives). You can download the latest version of Sourcetree for Mac and Sourcetree for Windows from the download center (https://www.sourcetreeapp.com/download-archives). This vulnerability was reported via our Bug Bounty program.

CVSS v3
8.0
EG Score
8.0(medium)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity80% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

July 21, 2026

Last Modified

August 10, 2026

Advisory Details (2)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

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https://jira.atlassian.com/browse/SRCTREE-8275
generic

Security Bulletin - July 21 2026 | Atlassian Support | Atlassian Documentation

https://confluence.atlassian.com/pages/viewpage.action?pageId=1821999345

Vendor Advisories for CVE-2026-21575(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 22× in last 7d / 118× 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 153 total refreshes for this CVE.

  1. 2026-08-30 02:15 UTCEG score recompute
  2. 2026-08-30 02:15 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 22:19 UTCEG score recompute
  6. 2026-08-27 22:19 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-27 11:20 UTCGHSA enrichment
  9. 2026-08-26 22:08 UTCEG score recompute
  10. 2026-08-26 22:08 UTCGHSA enrichment
  11. 2026-08-26 14:46 UTCEPSS rescore
  12. 2026-08-26 10:59 UTCGHSA enrichment
  13. 2026-08-25 22:37 UTCEG score recompute
  14. 2026-08-25 22:37 UTCGHSA enrichment
  15. 2026-08-25 13:48 UTCEPSS rescore
  16. 2026-08-25 10:45 UTCGHSA enrichment
  17. 2026-08-24 23:37 UTCEG score recompute
  18. 2026-08-24 23:37 UTCGHSA enrichment
  19. 2026-08-24 12:37 UTCEG score recompute
  20. 2026-08-24 12:37 UTCGHSA enrichment
  21. 2026-08-24 01:38 UTCGHSA enrichment
  22. 2026-08-23 14:38 UTCGHSA enrichment
  23. 2026-08-23 03:39 UTCEG score recompute
  24. 2026-08-23 03:39 UTCGHSA enrichment
  25. 2026-08-23 00:19 UTCEPSS rescore
Show 75 more
  1. 2026-08-22 16:40 UTCGHSA enrichment
  2. 2026-08-22 05:32 UTCEG score recompute
  3. 2026-08-22 05:32 UTCGHSA enrichment
  4. 2026-08-21 23:49 UTCEPSS rescore
  5. 2026-08-21 18:33 UTCGHSA enrichment
  6. 2026-08-21 07:34 UTCEG score recompute
  7. 2026-08-21 07:34 UTCGHSA enrichment
  8. 2026-08-20 22:55 UTCEPSS rescore
  9. 2026-08-20 20:34 UTCGHSA enrichment
  10. 2026-08-20 09:35 UTCGHSA enrichment
  11. 2026-08-19 22:36 UTCEG score recompute
  12. 2026-08-19 22:36 UTCGHSA enrichment
  13. 2026-08-19 17:03 UTCEPSS rescore
  14. 2026-08-19 06:50 UTCGHSA enrichment
  15. 2026-08-18 19:32 UTCEG score recompute
  16. 2026-08-18 19:31 UTCGHSA enrichment
  17. 2026-08-18 13:48 UTCEPSS rescore
  18. 2026-08-18 07:54 UTCGHSA enrichment
  19. 2026-08-17 20:53 UTCEG score recompute
  20. 2026-08-17 20:53 UTCGHSA enrichment
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 06:58 UTCGHSA enrichment
  23. 2026-08-16 20:00 UTCEG score recompute
  24. 2026-08-16 20:00 UTCGHSA enrichment
  25. 2026-08-16 14:56 UTCEPSS rescore
  26. 2026-08-16 09:01 UTCEG score recompute
  27. 2026-08-16 09:01 UTCGHSA enrichment
  28. 2026-08-16 02:14 UTCEPSS rescore
  29. 2026-08-15 22:02 UTCGHSA enrichment
  30. 2026-08-15 11:03 UTCEG score recompute
  31. 2026-08-15 11:03 UTCGHSA enrichment
  32. 2026-08-15 01:30 UTCEPSS rescore
  33. 2026-08-15 00:03 UTCGHSA enrichment
  34. 2026-08-14 13:04 UTCGHSA enrichment
  35. 2026-08-14 02:05 UTCEG score recompute
  36. 2026-08-14 02:05 UTCGHSA enrichment
  37. 2026-08-13 22:00 UTCEPSS rescore
  38. 2026-08-13 15:06 UTCGHSA enrichment
  39. 2026-08-13 04:07 UTCGHSA enrichment
  40. 2026-08-12 17:08 UTCEG score recompute
  41. 2026-08-12 17:08 UTCGHSA enrichment
  42. 2026-08-12 13:50 UTCEPSS rescore
  43. 2026-08-12 06:09 UTCGHSA enrichment
  44. 2026-08-11 19:09 UTCEG score recompute
  45. 2026-08-11 19:09 UTCGHSA enrichment
  46. 2026-08-11 13:42 UTCEPSS rescore
  47. 2026-08-11 08:11 UTCEG score recompute
  48. 2026-08-11 08:11 UTCGHSA enrichment
  49. 2026-08-11 00:00 UTCEPSS rescore
  50. 2026-08-10 21:11 UTCEG score recompute▲ 0.90
  51. 2026-08-10 21:11 UTCGHSA enrichment
  52. 2026-08-10 21:10 UTCNVD updateCVSS v3 → 8
  53. 2026-08-10 19:52 UTCGHSA enrichment
  54. 2026-08-10 08:52 UTCGHSA enrichment
  55. 2026-08-09 21:53 UTCEG score recompute
  56. 2026-08-09 21:53 UTCGHSA enrichment
  57. 2026-08-09 13:46 UTCEPSS rescore
  58. 2026-08-09 10:55 UTCGHSA enrichment
  59. 2026-08-08 23:56 UTCEG score recompute
  60. 2026-08-08 23:56 UTCGHSA enrichment
  61. 2026-08-08 16:37 UTCEPSS rescore
  62. 2026-08-08 12:57 UTCGHSA enrichment
  63. 2026-08-08 01:57 UTCEG score recompute
  64. 2026-08-08 01:57 UTCGHSA enrichment
  65. 2026-08-07 14:58 UTCGHSA enrichment
  66. 2026-08-07 03:59 UTCGHSA enrichment
  67. 2026-08-06 17:00 UTCEG score recompute
  68. 2026-08-06 17:00 UTCGHSA enrichment
  69. 2026-08-06 13:46 UTCEPSS rescore
  70. 2026-08-06 06:01 UTCEG score recompute
  71. 2026-08-06 06:01 UTCGHSA enrichment
  72. 2026-08-05 19:17 UTCEPSS rescore
  73. 2026-08-05 19:02 UTCGHSA enrichment
  74. 2026-08-05 08:02 UTCGHSA enrichment
  75. 2026-08-04 21:04 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-21575?
CVE-2026-21575 is a high vulnerability published on July 21, 2026. This High severity RCE (Remote Code Execution) vulnerability was introduced in version 3.4.11 of Sourcetree for Mac and Sourcetree for Windows. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to execute arbitrary code which has high impact…
When was CVE-2026-21575 disclosed?
CVE-2026-21575 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21575 actively exploited?
CVE-2026-21575 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 75.5% of all scored CVEs.
What is the CVSS score of CVE-2026-21575?
CVE-2026-21575 has a CVSS v3 base score of 8.0 (NVD).
How do I remediate CVE-2026-21575?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21575, 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

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