CVE-2026-9079

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM 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
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

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
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

Published

July 3, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 29, 2026
Patch available.
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(6)

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

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibcurl4-openssl-dev (7.58.0-2ubuntu3.24+esm9) @ bionic2026-09-23ubuntu
redhatcurl-0:8.12.1-4.el10_2.62026-09-21redhat
redhatlibcurl-1.dll2026-08-19redhat
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.

Affected Packages

(4 across 4 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
curl—
  • 8.8.0 up to 8.22.0-r0: fixed in 8.22.0-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
curl—
  • 8.8.0 up to 8.21.0-r0: fixed in 8.21.0-r0
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
curl8.14.1-2 ... 8.23.0~rc2-1+exp1 (84 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
curl8.14.1-2 ... 8.21.0~rc1-1+exp1 (59 versions)
  • every version up to 8.21.0~rc2-1: fixed in 8.21.0~rc2-1
—

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 7× in last 7d / 67× 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 585 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

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 on July 3, 2026, with the most recent update on September 15, 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 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
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?
A fix for CVE-2026-9079 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-9079 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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