CVE-2023-5685

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2024-03-22. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2024-0858 (ENISA EUVD) · GHSA-7f88-5hhx-67m2 (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3.5%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in XNIO. The XNIO NotifierState that can cause a Stack Overflow Exception when the chain of notifier states becomes problematically large can lead to uncontrolled resource management and a possible denial of service (DoS).

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation3.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
3.5%
EPSS %ILE
89th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
3.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 22, 2024

Last Modified

September 14, 2026

Advisory Details (9)

Auto-updated Sep 14, 2026
Patch available. Sources: redhat.
Red HatMentions a patch (unverified)

2241822 – (CVE-2023-5685) CVE-2023-5685 xnio: StackOverflowException when the chain of notifier states becomes problematically big

https://bugzilla.redhat.com/show_bug.cgi?id=2241822
Red HatMentions a patch (unverified)

CVE-2023-5685 - 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-2023-5685
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2024:2707
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2024:10208
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2024:10207
Red HatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2023:7641
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2023:7639
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2023:7638
Red HatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2023:7637

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhateap7-xalan-j2-0:2.7.1-26.redhat_00015.1.ep7.el72024-11-25redhat
redhateap7-xml-security-0:2.2.3-2.redhat_00001.1.el7eap2024-11-25redhat
redhatxnio2024-05-06redhat
redhateap7-jboss-xnio-base-0:3.8.11-1.SP1_redhat_00001.1.el8eap2023-12-04redhat
redhateap7-jboss-xnio-base-0:3.8.11-1.SP1_redhat_00001.1.el9eap2023-12-04redhat
redhatorg.jboss.xnio/xnio-nio:3.8.11.SP1-redhat-000012023-12-04redhat
redhateap7-jboss-xnio-base-0:3.8.11-1.SP1_redhat_00001.1.el7eap2023-12-04redhat
mavenorg.jboss.xnio:xnio-api @ 3.8.14.Final (fixes <= 3.8.13.Final)—ghsa

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
jboss-xnio3.8.10-1 ... 3.8.8-1 (8 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
jboss-xnio3.8.10-1, 3.8.8-1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
jboss-xnio3.8.10-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
jboss-xnio3.8.10-1
  • every version on: no fix on record
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.jboss.xnio:xnio-api2.0.0.CR2 ... 3.8.9.Final (154 versions)
  • every version up to 3.8.14.Final: fixed in 3.8.14.Final
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 221 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 128 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 08:17 UTCGHSA enrichmentGHSA-7f88-5hhx-67m2 · GitHub severity HIGH · GitHub CVSS 7.5
  2. 2026-11-01 08:17 UTCEG score recompute
  3. 2026-10-31 16:30 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  4. 2026-10-30 16:31 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  5. 2026-10-29 16:30 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  6. 2026-10-28 16:29 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  7. 2026-10-27 21:34 UTCEG score recompute
  8. 2026-10-27 21:34 UTCVendor advisory
  9. 2026-10-27 16:29 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  10. 2026-10-26 16:29 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  11. 2026-10-25 17:26 UTCEG score recompute
  12. 2026-10-25 16:30 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  13. 2026-10-24 16:29 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  14. 2026-10-23 16:29 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  15. 2026-10-22 16:31 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  16. 2026-10-21 16:29 UTCEPSS rescoreEPSS 3.5% · 89th percentile
  17. 2026-10-20 21:11 UTCEG score recompute
  18. 2026-10-20 21:11 UTCVendor advisory
  19. 2026-10-20 16:30 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  20. 2026-10-19 16:29 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  21. 2026-10-18 16:29 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  22. 2026-10-18 07:39 UTCEG score recompute
  23. 2026-10-17 16:30 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  24. 2026-10-16 16:36 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  25. 2026-10-15 16:29 UTCEPSS rescoreEPSS 3.5% · 88th percentile
Show 68 more
  1. 2026-10-14 16:30 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  2. 2026-10-13 16:30 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  3. 2026-10-12 18:11 UTCEG score recompute
  4. 2026-10-12 16:31 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  5. 2026-10-11 21:36 UTCEG score recompute
  6. 2026-10-11 13:45 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  7. 2026-10-10 19:58 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  8. 2026-10-09 20:05 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  9. 2026-10-08 17:06 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  10. 2026-10-07 23:46 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  11. 2026-10-06 15:15 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  12. 2026-10-05 17:41 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  13. 2026-10-04 06:04 UTCOSV refresh
  14. 2026-10-03 14:23 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  15. 2026-10-01 19:48 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  16. 2026-09-30 16:38 UTCEG score recompute
  17. 2026-09-30 15:01 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  18. 2026-09-29 15:17 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  19. 2026-09-28 13:49 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  20. 2026-09-26 00:22 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  21. 2026-09-24 14:01 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  22. 2026-09-23 13:46 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  23. 2026-09-20 20:14 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  24. 2026-09-18 19:26 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  25. 2026-09-16 14:06 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  26. 2026-09-16 05:11 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  27. 2026-09-15 03:08 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  28. 2026-09-14 20:27 UTCVendor advisory
  29. 2026-09-14 20:01 UTCEG score recompute
  30. 2026-09-14 20:01 UTCVendor advisory
  31. 2026-09-13 16:45 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  32. 2026-09-12 14:58 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  33. 2026-09-11 14:51 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  34. 2026-09-11 09:34 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  35. 2026-09-08 21:58 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  36. 2026-09-07 15:59 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  37. 2026-09-06 13:46 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  38. 2026-09-05 15:26 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  39. 2026-09-04 13:58 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  40. 2026-09-04 05:04 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  41. 2026-09-02 14:10 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  42. 2026-09-01 13:52 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  43. 2026-09-01 04:36 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  44. 2026-08-30 19:15 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  45. 2026-08-30 01:20 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  46. 2026-08-29 22:13 UTCOSV refresh
  47. 2026-08-28 21:39 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  48. 2026-08-27 14:23 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  49. 2026-08-26 14:44 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  50. 2026-08-25 13:47 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  51. 2026-08-23 00:17 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  52. 2026-08-21 23:47 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  53. 2026-08-20 22:53 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  54. 2026-08-19 17:02 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  55. 2026-08-18 13:46 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  56. 2026-08-16 14:54 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  57. 2026-08-16 02:12 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  58. 2026-08-15 01:28 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  59. 2026-08-13 21:58 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  60. 2026-08-13 08:43 UTCOSV refresh
  61. 2026-08-12 13:49 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  62. 2026-08-11 13:40 UTCEPSS rescoreEPSS 3.5% · 88th percentile
  63. 2026-08-10 23:58 UTCEPSS rescoreEPSS 3.5% · 87th percentile
  64. 2026-08-09 13:44 UTCEPSS rescoreEPSS 3.5% · 87th percentile
  65. 2026-08-08 16:35 UTCEPSS rescoreEPSS 3.5% · 87th percentile
  66. 2026-08-07 16:25 UTCEPSS rescoreEPSS 3.5% · 87th percentile
  67. 2026-08-06 13:45 UTCEPSS rescoreEPSS 3.5% · 87th percentile
  68. 2026-08-05 19:15 UTCEPSS rescoreEPSS 3.5% · 87th percentile

Frequently asked(5)

What is CVE-2023-5685?
CVE-2023-5685 is a high-severity vulnerability; its CVE record was published on March 22, 2024. A flaw was found in XNIO. The XNIO NotifierState that can cause a Stack Overflow Exception when the chain of notifier states becomes problematically large can lead to uncontrolled resource management and a possible denial of service (DoS).
When was CVE-2023-5685 made public?
CVE-2023-5685 was made public on March 5, 2024: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on March 22, 2024. EchelonGraph's copy of the record carries a last-modified date of September 14, 2026; the record at its source may have been updated since.
Is CVE-2023-5685 actively exploited?
CVE-2023-5685 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.5% probability of exploitation in the next 30 days (89th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-5685?
CVE-2023-5685 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-5685?
A fix for CVE-2023-5685 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-5685 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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