CVE-2026-35388

LOWNVD 2.52.5—
EchelonGraph scoreMEDIUM confidence

Score 2.5 from GitHub Security Advisory (severity: LOW) published 2026-04-02. NVD baseline CVSS 2.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
2.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 2.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.

CVSS v3
2.5
EG Score
2.5LOWmedium confidence
EG Risk
11
EG Risk 11/100

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
Severity25% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

Published

April 2, 2026

Last Modified

July 24, 2026

References (3)

Vendor Advisories for CVE-2026-35388(18)

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

Patch Availability(16)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntussh-askpass-gnome (1:10.2p1-2ubuntu3.2) @ resolute2026-07-26ubuntu
redhatrhaiis/model-opt-cuda-rhel9:17806819842026-06-10redhat
redhatopenssh-0:8.7p1-38.el9_4.82026-06-03redhat
redhatopenssh-0:8.7p1-30.el9_2.112026-06-02redhat
redhatopenssh-0:8.0p1-7.el8_4.22026-06-01redhat
redhatopenssh-0:8.0p1-15.el8_6.52026-05-27redhat
redhatrhui5/rhua-rhel9:17797982222026-05-27redhat
redhatopenssh-0:8.0p1-20.el8_8.42026-05-27redhat
redhatopenssh-0:9.9p1-23.el10_22026-05-19redhat
redhatopenssh-0:9.9p1-7.el9_82026-05-19redhat
redhatopenssh-0:8.7p1-45.el9_6.32026-05-11redhat
redhatdiscovery/discovery-ui-rhel9:17781567562026-05-07redhat
redhatopenssh-0:8.7p1-49.el9_72026-05-04redhat
redhatopenssh-0:9.9p1-14.el10_12026-05-04redhat
redhatopenssh-0:8.0p1-29.el8_102026-05-04redhat
redhatopenssh-0:9.9p1-7.el10_0.32026-04-30redhat

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)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:8.4p1-5 ... 1:8.4p1-5+deb11u6 (7 versions)
  • every version up to 1:8.4p1-5+deb11u7: fixed in 1:8.4p1-5+deb11u7
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:9.2p1-2 ... 1:9.2p1-2+deb12u9 (10 versions)
  • every version up to 1:9.2p1-2+deb12u10: fixed in 1:9.2p1-2+deb12u10
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:10.0p1-7, 1:10.0p1-7+deb13u1, 1:10.0p1-7+deb13u2
  • every version up to 1:10.0p1-7+deb13u3: fixed in 1:10.0p1-7+deb13u3
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
openssh1:10.0p1-7 ... 1:10.3p1-1~bpo13+1 (13 versions)
  • every version up to 1:10.3p1-1: fixed in 1:10.3p1-1
—

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 / 25× 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 187 total refreshes for this CVE.

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

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

Frequently asked(5)

What is CVE-2026-35388?
CVE-2026-35388 is a low vulnerability published on April 2, 2026. OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.
When was CVE-2026-35388 disclosed?
CVE-2026-35388 was first published on April 2, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-35388 actively exploited?
CVE-2026-35388 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (12th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35388?
CVE-2026-35388 has a CVSS v3 base score of 2.5 (NVD).
How do I remediate CVE-2026-35388?
A fix for CVE-2026-35388 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-35388 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-35388

Explore →

Is Your Infrastructure Affected by CVE-2026-35388?

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

Book a Demo →Browse All CVEs