diff --git a/src/components/rightSidePanel/errors/useErrorGroups.test.ts b/src/components/rightSidePanel/errors/useErrorGroups.test.ts
index 8a7f07a513..eca0453761 100644
--- a/src/components/rightSidePanel/errors/useErrorGroups.test.ts
+++ b/src/components/rightSidePanel/errors/useErrorGroups.test.ts
@@ -323,6 +323,90 @@ describe('useErrorGroups', () => {
       )
       expect(promptGroup).toBeDefined()
     })
+
+    it('sorts cards within an execution group by nodeId numerically', async () => {
+      const { store, groups } = createErrorGroups()
+      store.lastNodeErrors = {
+        '10': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        },
+        '2': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        },
+        '1': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        }
+      }
+      await nextTick()
+
+      const execGroup = groups.allErrorGroups.value.find(
+        (g) => g.type === 'execution'
+      )
+      const nodeIds = execGroup?.cards.map((c) => c.nodeId)
+      expect(nodeIds).toEqual(['1', '2', '10'])
+    })
+
+    it('sorts cards with subpath nodeIds before higher root IDs', async () => {
+      const { store, groups } = createErrorGroups()
+      store.lastNodeErrors = {
+        '2': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        },
+        '1:20': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        },
+        '1': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        }
+      }
+      await nextTick()
+
+      const execGroup = groups.allErrorGroups.value.find(
+        (g) => g.type === 'execution'
+      )
+      const nodeIds = execGroup?.cards.map((c) => c.nodeId)
+      expect(nodeIds).toEqual(['1', '1:20', '2'])
+    })
+
+    it('sorts deeply nested nodeIds by each segment numerically', async () => {
+      const { store, groups } = createErrorGroups()
+      store.lastNodeErrors = {
+        '10:11:99': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        },
+        '10:11:12': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        },
+        '10:2': {
+          class_type: 'KSampler',
+          dependent_outputs: [],
+          errors: [{ type: 'err', message: 'Error', details: '' }]
+        }
+      }
+      await nextTick()
+
+      const execGroup = groups.allErrorGroups.value.find(
+        (g) => g.type === 'execution'
+      )
+      const nodeIds = execGroup?.cards.map((c) => c.nodeId)
+      expect(nodeIds).toEqual(['10:2', '10:11:12', '10:11:99'])
+    })
   })
 
   describe('filteredGroups', () => {
diff --git a/src/components/rightSidePanel/errors/useErrorGroups.ts b/src/components/rightSidePanel/errors/useErrorGroups.ts
index 08135703a7..2fdf2eab44 100644
--- a/src/components/rightSidePanel/errors/useErrorGroups.ts
+++ b/src/components/rightSidePanel/errors/useErrorGroups.ts
@@ -23,7 +23,10 @@ import { st } from '@/i18n'
 import type { MissingNodeType } from '@/types/comfy'
 import type { ErrorCardData, ErrorGroup, ErrorItem } from './types'
 import type { NodeExecutionId } from '@/types/nodeIdentification'
-import { isNodeExecutionId } from '@/types/nodeIdentification'
+import {
+  isNodeExecutionId,
+  compareExecutionId
+} from '@/types/nodeIdentification'
 
 const PROMPT_CARD_ID = '__prompt__'
 const SINGLE_GROUP_KEY = '__single__'
@@ -151,12 +154,16 @@ function addCardErrorToGroup(
   group.get(card.id)?.errors.push(error)
 }
 
+function compareNodeId(a: ErrorCardData, b: ErrorCardData): number {
+  return compareExecutionId(a.nodeId, b.nodeId)
+}
+
 function toSortedGroups(groupsMap: Map<string, GroupEntry>): ErrorGroup[] {
   return Array.from(groupsMap.entries())
     .map(([title, groupData]) => ({
       type: 'execution' as const,
       title,
-      cards: Array.from(groupData.cards.values()),
+      cards: Array.from(groupData.cards.values()).sort(compareNodeId),
       priority: groupData.priority
     }))
     .sort((a, b) => {
diff --git a/src/types/nodeIdentification.test.ts b/src/types/nodeIdentification.test.ts
index 063b8f6e0d..20d0215414 100644
--- a/src/types/nodeIdentification.test.ts
+++ b/src/types/nodeIdentification.test.ts
@@ -2,6 +2,7 @@ import { describe, expect, it } from 'vitest'
 
 import type { NodeId } from '@/platform/workflow/validation/schemas/workflowSchema'
 import {
+  compareExecutionId,
   createNodeExecutionId,
   createNodeLocatorId,
   getAncestorExecutionIds,
@@ -232,4 +233,45 @@ describe('nodeIdentification', () => {
       expect(getParentExecutionIds('65:70:63')).toEqual(['65', '65:70'])
     })
   })
+
+  describe('compareExecutionId', () => {
+    it('sorts simple numeric IDs in ascending order', () => {
+      expect(compareExecutionId('1', '2')).toBeLessThan(0)
+      expect(compareExecutionId('2', '1')).toBeGreaterThan(0)
+      expect(compareExecutionId('5', '5')).toBe(0)
+    })
+
+    it('compares nested IDs left-to-right by segment', () => {
+      // "1" < "1:20" < "2" < "10:11:12" as documented
+      expect(compareExecutionId('1', '1:20')).toBeLessThan(0)
+      expect(compareExecutionId('1:20', '2')).toBeLessThan(0)
+      expect(compareExecutionId('2', '10:11:12')).toBeLessThan(0)
+    })
+
+    it('treats a shorter ID as having trailing segment 0 when comparing', () => {
+      // "5" vs "5:0" → first segments equal, second: 0 vs 0 → equal
+      expect(compareExecutionId('5', '5:0')).toBe(0)
+      // "5" vs "5:1" → second segment 0 < 1
+      expect(compareExecutionId('5', '5:1')).toBeLessThan(0)
+    })
+
+    it('handles undefined inputs by treating them as empty string (segment 0)', () => {
+      expect(compareExecutionId(undefined, '1')).toBeLessThan(0)
+      expect(compareExecutionId('1', undefined)).toBeGreaterThan(0)
+      expect(compareExecutionId(undefined, undefined)).toBe(0)
+    })
+
+    it('handles empty string inputs', () => {
+      expect(compareExecutionId('', '1')).toBeLessThan(0)
+      expect(compareExecutionId('1', '')).toBeGreaterThan(0)
+      expect(compareExecutionId('', '')).toBe(0)
+    })
+
+    it('treats non-numeric segments as 0 via NaN guard', () => {
+      // Number('foo') → NaN → treated as 0
+      expect(compareExecutionId('foo', '1')).toBeLessThan(0)
+      expect(compareExecutionId('foo', '0')).toBe(0)
+      expect(compareExecutionId('1:foo', '1:0')).toBe(0)
+    })
+  })
 })
diff --git a/src/types/nodeIdentification.ts b/src/types/nodeIdentification.ts
index fd184fdead..eb29525001 100644
--- a/src/types/nodeIdentification.ts
+++ b/src/types/nodeIdentification.ts
@@ -146,3 +146,26 @@ export function getParentExecutionIds(
 ): NodeExecutionId[] {
   return getAncestorExecutionIds(executionId).slice(0, -1)
 }
+
+/**
+ * Compare two NodeExecutionIds for ascending numeric sort order.
+ * Splits each ID by ":" and compares segments numerically left to right.
+ *
+ * Example order: "1" < "1:20" < "2" < "10:11:12"
+ */
+export function compareExecutionId(
+  a: string | undefined,
+  b: string | undefined
+): number {
+  const parse = (id: string | undefined) => (id ?? '').split(':').map(Number)
+  const idA = parse(a)
+  const idB = parse(b)
+  for (let i = 0; i < Math.max(idA.length, idB.length); i++) {
+    const segA = idA[i] ?? 0
+    const segB = idB[i] ?? 0
+    const diff =
+      (Number.isNaN(segA) ? 0 : segA) - (Number.isNaN(segB) ? 0 : segB)
+    if (diff !== 0) return diff
+  }
+  return 0
+}