node-opcua is an OPC UA implementation for TypeScript and Node.js. From 2.0.0 until 2.170.0, node-opcua clients using the default keepSessionAlive setting can enter a repeated reconnection cycle when an OPC UA server's clock skew causes BadInvalidTimestamp responses. ClientSessionKeepAliveManager._ping_server treated the server-originated ServiceFault as a network outage and forced a transport reconnect, while ClientTCP_transport._on_ACK_response used socket.end() after failed HEL/ACK negotiation and could leave the connection in FIN-WAIT-2 when the peer did not close. Repetition at the keepAliveInterval accumulates file descriptors and memory until the client process or container can be terminated by resource exhaustion. This issue is fixed in version 2.170.0.
CVE-2026-68904
“—” beside the score: it is equal to the CVSS score beside it.
Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. A secondary CVSS source baseline 7.0; sources differ by 0.0.
Also known asEUVD-2026-80869 (ENISA EUVD) · GHSA-r2pf-9cw4-5j65 (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.0
- EG Score
- 7.0HIGHmedium confidence
- EG Risk
- 32EG Risk 32/100
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)Severity70% × 45%Impact severity (EG Severity): CVSS 7.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (CISA Vulnrichment) · Automatable no (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. - EPSS PROB
- 0.4%
- EPSS %ILE
- 38th
- 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 (7.0): severity, escalated by confirmed exploitation. This CVE's 7.0 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.0 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 0.4% 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade 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 every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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
September 16, 2026
Last Modified
September 30, 2026
Advisory Details (6)
Auto-updated Sep 16, 2026commit dc406fd2d364 (node-opcua/node-opcua)
Fix landed in node-opcua/node-opcua commit dc406fd2d364 — awaiting tagged release
https://github.com/node-opcua/node-opcua/commit/dc406fd2d364aa69dd173be21ed32a7ff425017acommit 4d59197e2dbd (node-opcua/node-opcua)
Fix landed in node-opcua/node-opcua commit 4d59197e2dbd — awaiting tagged release
https://github.com/node-opcua/node-opcua/commit/4d59197e2dbd82791d7f36dad7da178715e0c27acommit 481664fa6ba8 (node-opcua/node-opcua)
Fix landed in node-opcua/node-opcua commit 481664fa6ba8 — awaiting tagged release
https://github.com/node-opcua/node-opcua/commit/481664fa6ba8204737c5a92797ff68c3ae780c1ccommit 1959cbb8946b (node-opcua/node-opcua)
Fix landed in node-opcua/node-opcua commit 1959cbb8946b — awaiting tagged release
https://github.com/node-opcua/node-opcua/commit/1959cbb8946b386d2e24a1cce05b7148099d36e7Fix/socket keep alive
Fix merged in node-opcua/node-opcua PR #1497 on 2026-04-27 — awaiting tagged release
https://github.com/node-opcua/node-opcua/pull/1497[Security] TCP Socket Leak (FIN-WAIT-2) via keepalive reconnection cycle - CWE400 Resource Exhaustion · Advisory · node-opcua/node-opcua · GitHub
https://github.com/node-opcua/node-opcua/security/advisories/GHSA-r2pf-9cw4-5j65Vendor Advisories for CVE-2026-68904(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| npm | node-opcua @ 2.170.0 (fixes >= 2.0.0, < 2.170.0) | — | 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
(3 across 1 ecosystem)
npm(3)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| node-opcua | — |
| — |
| node-opcua-client | — |
| — |
| node-opcua-transport | — |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 49× 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.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-11-01 07:40 UTCGHSA enrichmentGHSA-r2pf-9cw4-5j65 · GitHub severity HIGH · GitHub CVSS 7.0
- 2026-11-01 07:40 UTCEG score recompute
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-27 19:24 UTCEG score recompute
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.4% · 38th percentile
- 2026-10-25 14:09 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-20 08:58 UTCEG score recompute
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-18 03:19 UTCEG score recompute
- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.4% · 37th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
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- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-13 09:59 UTCEG score recompute
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-12 15:44 UTCEG score recompute
- 2026-10-11 19:29 UTCEG score recompute
- 2026-10-11 16:45 UTCEG score recompute
- 2026-10-11 14:06 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-11 03:48 UTCEG score recompute
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-10 03:08 UTCEG score recompute
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-08 18:10 UTCEG score recompute
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-08 02:16 UTCEG score recompute
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-06 17:20 UTCEG score recompute
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-05 19:23 UTCEG score recompute
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-05 08:13 UTCEG score recompute
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-03 23:13 UTCEG score recompute
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-03 01:10 UTCEG score recompute
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-10-02 03:11 UTCEG score recompute
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-30 18:08 UTCEG score recompute
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-29 16:51 UTCEG score recompute
- 2026-09-29 05:36 UTCEG score recompute
- 2026-09-28 18:37 UTCEG score recompute
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-27 20:39 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-26 22:42 UTCEG score recompute
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-26 11:25 UTCEG score recompute
- 2026-09-24 15:05 UTCEG score recompute
- 2026-09-24 04:01 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-22 19:06 UTCEG score recompute
- 2026-09-22 08:06 UTCEG score recompute
- 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-20 23:12 UTCEG score recompute
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-20 01:11 UTCEG score recompute
- 2026-09-19 03:14 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 36th percentile
- 2026-09-18 05:17 UTCEG score recompute
- 2026-09-16 19:25 UTCEG score recompute
- 2026-09-16 18:41 UTCEG score recompute
- 2026-09-16 17:33 UTCEG score recompute
- 2026-09-16 16:36 UTCEG score recomputeFirst assessed: 7.0 HIGH
- 2026-09-16 16:34 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Same product
5 shownnpm:node-opcua
Frequently asked(5)
What is CVE-2026-68904?
When was the CVE record for CVE-2026-68904 published?
Is CVE-2026-68904 actively exploited?
What is the CVSS score of CVE-2026-68904?
How do I remediate CVE-2026-68904?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-68904
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