CVE-2026-34503

HIGHPre-NVD 8.18.1
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.1 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.3% (27th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 7.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-03-31) is not newer than that change (2026-09-24), so it does not.

Triggered by: Headline CVSS from the CNA's CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week

Also known asEUVD-2026-17469 (ENISA EUVD) · GHSA-2pr2-hcv6-7gwv (GitHub Security Advisories)Source: ENISA EUVD

8.1EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

OpenClaw before 2026.3.28 fails to disconnect active WebSocket sessions when devices are removed or tokens are revoked. Attackers with revoked credentials can maintain unauthorized access through existing live sessions until forced reconnection.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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)
Severity81% × 45%
Impact severity (EG Severity): CVSS 8.1 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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
0.3%
EPSS %ILE
27th
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 (8.1): severity, escalated by confirmed exploitation. This CVE's 8.1 is its impact severity (EG Severity), not escalated.

EG Severity
8.1 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.the CNA's CVSS · CVSS v3.0 or v3.1
EG Likelihood
0.3% 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; Track* at high (mission-essential systems).CISA BOD 26-04: 14 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 low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; 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 total (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 31, 2026

Last Modified

September 24, 2026

Advisory Details (3)

Auto-updated Jun 10, 2026
Patch available. Sources: github_commit, github.
Web page

OpenClaw < 2026.3.28 - Incomplete WebSocket Session Termination on Device Removal and Token Revocation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openclaw-incomplete-websocket-session-termination-on-device-removal-and-token-revocation
GitHub advisoryMentions a patch (unverified)

Device removal and token revocation do not terminate active WebSocket sessions · Advisory · openclaw/openclaw · GitHub

https://github.com/openclaw/openclaw/security/advisories/GHSA-2pr2-hcv6-7gwv
GitHub commit

commit 7a801cc451e9 (openclaw/openclaw)

Fix landed in openclaw/openclaw commit 7a801cc451e9 — awaiting tagged release

https://github.com/openclaw/openclaw/commit/7a801cc451e9e667b705eeccff651923a1b8c863

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
npmopenclaw @ 2026.3.28 (fixes <= 2026.3.24)—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

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
openclaw—
  • every version up to 2026.3.28: fixed in 2026.3.28
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 42× 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 98 of 216 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 118 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:44 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  3. 2026-11-01 07:53 UTCGHSA enrichmentGHSA-2pr2-hcv6-7gwv · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-11-01 07:53 UTCEG score recompute
  5. 2026-10-31 22:44 UTCEG score recompute
  6. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  7. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  8. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  9. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  10. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  11. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  12. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  13. 2026-10-25 14:33 UTCEG score recompute
  14. 2026-10-24 19:11 UTCEG score recompute
  15. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  16. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  18. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  19. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  20. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  22. 2026-10-18 03:45 UTCEG score recompute
  23. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  24. 2026-10-17 15:33 UTCEG score recompute
  25. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.5% · 37th percentile
Show 73 more
  1. 2026-10-16 06:54 UTCOSV refresh
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  3. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  4. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  6. 2026-10-12 16:12 UTCEG score recompute
  7. 2026-10-11 19:54 UTCEG score recompute
  8. 2026-10-11 17:08 UTCEG score recompute
  9. 2026-10-11 14:35 UTCEG score recompute
  10. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  24. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  25. 2026-09-24 15:03 UTCEG score recompute
  26. 2026-09-21 14:49 UTCOSV refresh
  27. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  28. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  29. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  30. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  31. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  32. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  33. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  34. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  35. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  36. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  37. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  38. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  39. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  41. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  42. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  43. 2026-09-02 12:34 UTCOSV refresh
  44. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  45. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  46. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  47. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  48. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  49. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  50. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  51. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  52. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  53. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  54. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  55. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  56. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  57. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  58. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  59. 2026-08-16 09:39 UTCEG score recompute
  60. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  61. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  62. 2026-08-14 06:02 UTCEG score recompute
  63. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  64. 2026-08-12 20:24 UTCEG score recompute
  65. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  66. 2026-08-11 20:37 UTCEG score recompute
  67. 2026-08-11 03:37 UTCEG score recompute
  68. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  69. 2026-08-09 18:37 UTCEG score recompute
  70. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  71. 2026-08-09 05:38 UTCEG score recompute
  72. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  73. 2026-08-08 04:42 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-34503?
CVE-2026-34503 is a high-severity vulnerability; its CVE record was published on March 31, 2026. OpenClaw before 2026.3.28 fails to disconnect active WebSocket sessions when devices are removed or tokens are revoked. Attackers with revoked credentials can maintain unauthorized access through existing live sessions until forced reconnection.
When was CVE-2026-34503 made public?
CVE-2026-34503 was made public on March 29, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on March 31, 2026. EchelonGraph's copy of the record carries a last-modified date of September 24, 2026; the record at its source may have been updated since.
Is CVE-2026-34503 actively exploited?
CVE-2026-34503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34503?
CVE-2026-34503 has a CVSS base score of 8.1 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-34503?
A fix for CVE-2026-34503 is available: update to the fixed version the vendor names in its advisory.

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