CVE-2026-39872

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-06-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

A fix is available — apply it.

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

June 29, 2026

Last Modified

August 17, 2026

Advisory Details (3)

Auto-updated Jun 29, 2026
No patch confirmed yet.
generic

About the security content of Safari 26.5.2 - Apple Support

https://support.apple.com/en-us/127685
generic

About the security content of macOS Tahoe 26.5.2 - Apple Support

https://support.apple.com/en-us/127595
generic

About the security content of iOS 26.5.2 and iPadOS 26.5.2 - Apple Support

https://support.apple.com/en-us/127594

Vendor Advisories for CVE-2026-39872(5)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatwebkit2gtk3-0:2.52.5-1.el9_42026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_62026-08-13redhat
redhatwebkit2gtk3-0:2.52.5-1.el9_82026-07-20redhat
redhatwebkit2gtk3-0:2.52.5-1.el8_102026-07-20redhat

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.

Affected Packages

(8 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.32.3-1 ... 2.53.4-1 (246 versions)——
wpewebkit2.32.3-2 ... 2.52.5-1 (90 versions)——
Debian:12(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.40.1-1 ... 2.53.4-1 (161 versions)——
wpewebkit2.38.6-1 ... 2.52.5-1 (53 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.48.3-1 ... 2.52.4-1 (48 versions)2.52.5-1~deb13u1—
wpewebkit2.48.3-1 ... 2.52.5-1 (19 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
webkit2gtk2.48.3-1 ... 2.52.5-1~deb13u1 (49 versions)2.52.5-1—
wpewebkit2.48.3-1 ... 2.52.4-1 (18 versions)2.52.5-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 29× in last 7d / 117× 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 163 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-39872?
CVE-2026-39872 is a medium vulnerability published on June 29, 2026. The issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash.
When was CVE-2026-39872 disclosed?
CVE-2026-39872 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39872 actively exploited?
CVE-2026-39872 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 83.3% of all scored CVEs.
What is the CVSS score of CVE-2026-39872?
CVE-2026-39872 has a CVSS v3.1 base score of 6.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-39872?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39872, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-39872

Explore →

Is Your Infrastructure Affected by CVE-2026-39872?

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

Start Free Scan →Browse All CVEs