CVE-2026-9079

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
—
EPSS
61.1%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 7, 2026

Advisory Details (3)

Auto-updated Jul 20, 2026
No patch confirmed yet.
generic

HackerOne

https://hackerone.com/reports/3750295
generic
https://curl.se/docs/CVE-2026-9079.json
generic

curl - stale proxy password leak - CVE-2026-9079

https://curl.se/docs/CVE-2026-9079.html

Vendor Advisories for CVE-2026-9079(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
ubuntulibcurl4-openssl-dev (7.47.0-1ubuntu2.19+esm16) @ xenial2026-07-17ubuntu
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.

Weakness Classification(1)

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

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 22× in last 7d / 115× 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 115 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9079?
CVE-2026-9079 is a critical vulnerability published on July 3, 2026. libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them.
When was CVE-2026-9079 disclosed?
CVE-2026-9079 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-2026-9079 actively exploited?
CVE-2026-9079 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 61.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9079?
CVE-2026-9079 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-9079?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9079, 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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