CVE-2026-0967

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 87% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the match_pattern() function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

March 26, 2026

Last Modified

September 1, 2026

Advisory Details (5)

Auto-updated Aug 6, 2026
Patch available. Sources: redhat.
generic

libssh 0.12.0 and 0.11.4 security releases – libssh

https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/
redhat Patch Available

2436981 – (CVE-2026-0967) CVE-2026-0967 libssh: libssh: Denial of Service via inefficient regular expression processing

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2436981
redhat Patch Available

CVE-2026-0967 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-0967
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:18683
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:18160

Vendor Advisories for CVE-2026-0967(4)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibssh-gcrypt-dev (0.9.6-2ubuntu0.22.04.6) @ jammy2026-09-01ubuntu
ubuntulibssh-gcrypt-dev (0.8.0~20170825.94fa1e38-1ubuntu0.7+esm6) @ bionic2026-09-01ubuntu
redhatlibssh-0:0.12.0-2.el102026-05-19redhat
redhatlibssh-0:0.10.4-18.el92026-05-19redhat

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 rangeFixed inDependents
libssh0.10.4-1 ... 0.9.8-0+deb11u2 (25 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libssh0.10.5-2 ... 0.12.2-1 (17 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libssh0.11.2-1, 0.11.2-1+deb13u1, 0.11.3-10.11.5-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libssh0.11.2-1, 0.11.3-10.12.0-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

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 4× in last 7d / 35× 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 196 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-16 05:14 UTCEPSS rescore
  3. 2026-09-13 16:46 UTCEPSS rescore
  4. 2026-09-12 15:00 UTCEPSS rescore
  5. 2026-09-11 14:52 UTCEPSS rescore
  6. 2026-09-11 09:36 UTCEPSS rescore
  7. 2026-09-10 09:34 UTCEPSS rescore
  8. 2026-09-08 22:00 UTCEPSS rescore
  9. 2026-09-07 16:01 UTCEPSS rescore
  10. 2026-09-06 13:47 UTCEPSS rescore
  11. 2026-09-04 05:06 UTCEPSS rescore
  12. 2026-09-02 14:11 UTCEPSS rescore
  13. 2026-09-01 13:53 UTCEPSS rescore
  14. 2026-09-01 13:51 UTCVendor advisory
  15. 2026-09-01 13:51 UTCGHSA enrichment
  16. 2026-09-01 12:23 UTCEG score recompute
  17. 2026-09-01 12:23 UTCVendor advisory
  18. 2026-09-01 12:23 UTCGHSA enrichment
  19. 2026-09-01 04:39 UTCEPSS rescore
  20. 2026-08-31 16:43 UTCEG score recompute
  21. 2026-08-31 16:43 UTCVendor advisory
  22. 2026-08-31 16:43 UTCGHSA enrichment
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 01:21 UTCEPSS rescore
  25. 2026-08-28 21:40 UTCEPSS rescore
Show 75 more
  1. 2026-08-27 14:24 UTCEPSS rescore
  2. 2026-08-25 13:48 UTCEPSS rescore
  3. 2026-08-23 00:19 UTCEPSS rescore
  4. 2026-08-21 23:48 UTCEPSS rescore
  5. 2026-08-21 13:23 UTCVendor advisory
  6. 2026-08-21 13:23 UTCGHSA enrichment
  7. 2026-08-21 13:09 UTCEG score recompute
  8. 2026-08-21 13:09 UTCVendor advisory
  9. 2026-08-21 13:09 UTCGHSA enrichment
  10. 2026-08-20 22:55 UTCEPSS rescore
  11. 2026-08-19 17:03 UTCEPSS rescore
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 10:05 UTCEG score recompute
  14. 2026-08-16 10:05 UTCVendor advisory
  15. 2026-08-16 10:05 UTCGHSA enrichment
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 01:30 UTCEPSS rescore
  18. 2026-08-14 06:24 UTCEG score recompute
  19. 2026-08-14 06:24 UTCVendor advisory
  20. 2026-08-14 06:24 UTCGHSA enrichment
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-12 20:41 UTCEG score recompute
  23. 2026-08-12 20:41 UTCVendor advisory
  24. 2026-08-12 20:41 UTCGHSA enrichment
  25. 2026-08-12 13:50 UTCEPSS rescore
  26. 2026-08-11 13:42 UTCEPSS rescore
  27. 2026-08-11 08:55 UTCEG score recompute
  28. 2026-08-11 08:55 UTCVendor advisory
  29. 2026-08-11 08:55 UTCGHSA enrichment
  30. 2026-08-10 23:59 UTCEPSS rescore
  31. 2026-08-10 07:25 UTCEG score recompute
  32. 2026-08-10 07:25 UTCVendor advisory
  33. 2026-08-10 07:25 UTCGHSA enrichment
  34. 2026-08-09 13:46 UTCEPSS rescore
  35. 2026-08-09 05:56 UTCEG score recompute
  36. 2026-08-09 05:56 UTCVendor advisory
  37. 2026-08-09 05:56 UTCGHSA enrichment
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-07 16:22 UTCEG score recompute
  40. 2026-08-07 16:22 UTCVendor advisory
  41. 2026-08-07 16:22 UTCGHSA enrichment
  42. 2026-08-06 13:46 UTCEPSS rescore
  43. 2026-08-06 00:50 UTCEG score recompute
  44. 2026-08-06 00:50 UTCVendor advisory
  45. 2026-08-06 00:50 UTCGHSA enrichment
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-04 15:09 UTCEPSS rescore
  48. 2026-08-04 10:38 UTCEPSS rescore
  49. 2026-08-03 23:16 UTCEG score recompute
  50. 2026-08-03 23:16 UTCVendor advisory
  51. 2026-08-03 23:16 UTCGHSA enrichment
  52. 2026-08-03 10:35 UTCEPSS rescore
  53. 2026-08-02 15:21 UTCEG score recompute
  54. 2026-08-02 15:21 UTCVendor advisory
  55. 2026-08-02 15:21 UTCGHSA enrichment
  56. 2026-08-02 02:26 UTCEPSS rescore
  57. 2026-08-01 04:15 UTCEPSS rescore
  58. 2026-07-30 16:27 UTCEPSS rescore
  59. 2026-07-30 01:30 UTCEPSS rescore
  60. 2026-07-28 15:36 UTCEPSS rescore
  61. 2026-07-27 14:13 UTCEPSS rescore
  62. 2026-07-26 14:54 UTCEPSS rescore
  63. 2026-07-26 14:54 UTCEPSS rescore
  64. 2026-07-25 14:17 UTCEPSS rescore
  65. 2026-07-24 14:17 UTCEPSS rescore
  66. 2026-07-23 14:18 UTCEPSS rescore
  67. 2026-07-23 03:04 UTCEG score recompute▲ 3.30
  68. 2026-07-22 14:08 UTCEPSS rescore
  69. 2026-07-21 15:24 UTCEPSS rescore
  70. 2026-07-20 17:08 UTCEPSS rescore
  71. 2026-07-19 14:30 UTCEPSS rescore
  72. 2026-07-19 02:28 UTCEPSS rescore
  73. 2026-07-18 10:04 UTCEPSS rescore
  74. 2026-07-16 17:02 UTCEPSS rescore
  75. 2026-07-16 04:53 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-0967?
CVE-2026-0967 is a medium vulnerability published on March 26, 2026. A flaw was found in libssh. A remote attacker, by controlling client configuration files or knownhosts files, could craft specific hostnames that when processed by the matchpattern() function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion,…
When was CVE-2026-0967 disclosed?
CVE-2026-0967 was first published in the National Vulnerability Database on March 26, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-0967 actively exploited?
CVE-2026-0967 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 86.8% of all scored CVEs.
What is the CVSS score of CVE-2026-0967?
CVE-2026-0967 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-0967?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-0967, 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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