CVE-2026-8924

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.1Exploit: Elevated riskExposed: 0

A fix is available — apply it.

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains.

CVSS v3
9.1
EG Score
9.1(high)
EG Risk
72(Attend)
EG Risk 72/100SSVC: 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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 7, 2026

Advisory Details (3)

Auto-updated Jul 6, 2026
No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/3733905
generic
https://curl.se/docs/CVE-2026-8924.json
generic

curl - trailing dot domain super cookie - CVE-2026-8924

https://curl.se/docs/CVE-2026-8924.html

Vendor Advisories for CVE-2026-8924(4)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibcurl4t64 (8.5.0-2ubuntu10.10) @ noble2026-07-27ubuntu
redhatrust-main-1.96.1-1.hum12026-07-02redhat
redhatcurl-main-8.21.0-0.1.hum12026-06-24redhat

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.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 28× in last 7d / 158× 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 158 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-8924?
CVE-2026-8924 is a critical vulnerability published on July 3, 2026. A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains.
When was CVE-2026-8924 disclosed?
CVE-2026-8924 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on July 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8924 actively exploited?
CVE-2026-8924 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 56.8% of all scored CVEs.
What is the CVSS score of CVE-2026-8924?
CVE-2026-8924 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-8924?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8924, 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-2026-8924

Explore →

Is Your Infrastructure Affected by CVE-2026-8924?

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

Start Free Scan →Browse All CVEs