CVE-2026-38639

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-26. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

An issue in the parse_month function (/time/strptime.rs) of relibc commit ab6a2e allows attackers to cause a Denial of Service (DoS) via parsing a crafted input.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

June 26, 2026

Last Modified

June 29, 2026

Advisory Details (4)

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

Panic in `parse_month` when parsing month names with multibyte characters (#265) · Issues · redox-os / relibc · GitLab

https://gitlab.redox-os.org/redox-os/relibc/-/work_items/265
generic

fix: handle char boundary in `parse_weekday` and `parse_month` (!990) · Merge requests · redox-os / relibc · GitLab

https://gitlab.redox-os.org/redox-os/relibc/-/merge_requests/990
generic

Panic in `parse_month` when parsing month names with multibyte characters (#265) · Issues · redox-os / relibc · GitLab

https://gitlab.redox-os.org/redox-os/relibc/-/issues/265
generic

pocs/redox/CVE-2026-38639 at master · Marsman1996/pocs · GitHub

https://github.com/Marsman1996/pocs/tree/master/redox/CVE-2026-38639

Vendor Advisories for CVE-2026-38639(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 / 64× 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 204 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-38639?
CVE-2026-38639 is a high vulnerability published on June 26, 2026. An issue in the parse_month function (/time/strptime.rs) of relibc commit ab6a2e allows attackers to cause a Denial of Service (DoS) via parsing a crafted input.
When was CVE-2026-38639 disclosed?
CVE-2026-38639 was first published in the National Vulnerability Database on June 26, 2026, with the most recent update on June 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38639 actively exploited?
CVE-2026-38639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.8% of all scored CVEs.
What is the CVSS score of CVE-2026-38639?
CVE-2026-38639 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-38639?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38639, 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-2026-38639

Explore →

Is Your Infrastructure Affected by CVE-2026-38639?

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

Start Free Scan →Browse All CVEs