CVE-2023-1108

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 1.8%, top 24% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in undertow. This issue makes achieving a denial of service possible due to an unexpected handshake status updated in SslConduit, where the loop never terminates.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
76%
KEV
Not listed

Published

September 14, 2023

Last Modified

November 21, 2024

References (36)

Vendor Advisories for CVE-2023-1108(14)

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

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
redhateap7-wildfly-elytron-0:1.10.17-1.Final_redhat_00001.1.el7eap2025-06-25redhat
redhateap7-xml-security-0:2.0.10-2.redhat_00002.1.ep7.el72025-04-28redhat
redhatundertow2023-08-16redhat
redhatrh-sso7-keycloak-0:18.0.8-1.redhat_00001.1.el7sso2023-06-27redhat
redhatrh-sso7-keycloak-0:18.0.8-1.redhat_00001.1.el9sso2023-06-27redhat
redhatrh-sso-7/sso76-openshift-rhel8:7.6-242023-06-27redhat
redhatrh-sso7-keycloak-0:18.0.8-1.redhat_00001.1.el8sso2023-06-27redhat
redhateap7-undertow-jastow-0:2.0.14-1.Final_redhat_00001.1.el8eap2023-03-29redhat
redhateap7-undertow-jastow-0:2.0.14-1.Final_redhat_00001.1.el7eap2023-03-29redhat
redhatpatch2023-03-29redhat
redhateap7-undertow-jastow-0:2.0.14-1.Final_redhat_00001.1.el9eap2023-03-29redhat
redhateap7-wildfly-0:7.4.9-6.GA_redhat_00004.1.el7eap2023-03-09redhat
redhatio.undertow/undertow-core:2.2.22.SP3-redhat-000012023-03-09redhat

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

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
undertow1.3.11-1 ... 2.3.8-1 (52 versions)2.3.8-2—
Maven(1)
PackageVulnerable rangeFixed inDependents
io.undertow:undertow-core1.0.0.Alpha1 ... 2.2.9.Final (292 versions)2.2.24.Final—

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 5× in last 7d / 29× 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 139 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2023-1108?
CVE-2023-1108 is a high vulnerability published on September 14, 2023. A flaw was found in undertow. This issue makes achieving a denial of service possible due to an unexpected handshake status updated in SslConduit, where the loop never terminates.
When was CVE-2023-1108 disclosed?
CVE-2023-1108 was first published in the National Vulnerability Database on September 14, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-1108 actively exploited?
CVE-2023-1108 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 23.6% of all scored CVEs.
What is the CVSS score of CVE-2023-1108?
CVE-2023-1108 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-1108?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-1108, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-1108

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