Payment Sheet Crash with Xcode 26.4 on Apple Silicon

[HyperJames]

Calling Stripe.instance.presentPaymentSheet() causes an immediate native SIGABRT / EXC_BAD_ACCESS crash on iOS (both on physical devices and Apple Silicon simulators). The crash originates in the Swift Concurrency engine (libswift_Concurrency.dylib) during PaymentSheetLoader.load when the native SDK attempts to resolve async let parallel network tasks. Xcode's terminal explicitly outputs freed pointer was not the last allocation immediately before the crash.
The crash occurs regardless of whether the initialization uses Deferred Intents (IntentConfiguration) or the Standard Flow (setupIntentClientSecret). All backend Stripe API requests (e.g., /v1/elements/sessions, /v1/payment_methods) return 200 OK prior to the crash, confirming the data parameters are valid.

To Reproduce

Steps to reproduce the behavior:

1. Create a Setup Intent and an Ephemeral Key for a Customer on the backend.

2. Initialize the Payment Sheet in Flutter using the Standard Flow:

await Stripe.instance.initPaymentSheet(
  paymentSheetParameters: SetupPaymentSheetParameters(
    customFlow: false,
    merchantDisplayName: 'Test Merchant',
    returnURL: 'https://your-domain.com',
    setupIntentClientSecret: 'seti_12345_secret_abc', 
    customerId: 'cus_12345',                
    customerEphemeralKeySecret: 'ek_test_12345',
    style: ThemeMode.dark,
  ),
);

3. Call await Stripe.instance.presentPaymentSheet();

4. Observe a fatal application crash (SIGABRT or EXC_BAD_ACCESS) with the following stack trace.

Expected behavior

The native iOS Payment Sheet bottom modal should render and present to the user without crashing the host application.

Smartphone / tablet

• Device: iPhone 18,1 (Physical) and Mac14,6 (iOS Simulator on Apple Silicon M2 Max)
• OS: iOS 19.x / macOS 26.3.1
• Package version: 10.1.1 (Also reproduced on newer versions)
• Flutter version: 3.41.0

Additional context

The Flutter code executes perfectly up until the UI presentation. Below is the relevant native iOS crash trace showing the Swift Concurrency failure inside PaymentSheetLoader:

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib           0x10383c85c __pthread_kill + 8
1   libsystem_pthread.dylib          0x1054422a8 pthread_kill + 264
2   libsystem_c.dylib                0x18017a910 __abort + 120
3   libsystem_c.dylib                0x18017a898 abort + 128
4   libswift_Concurrency.dylib       0x237969814 swift::swift_Concurrency_fatalErrorv + 28
5   libswift_Concurrency.dylib       0x237969830 swift::swift_Concurrency_fatalError + 28
6   libswift_Concurrency.dylib       0x237969a0c <deduplicated_symbol> + 60
7   libswift_Concurrency.dylib       0x2379213c8 swift::_swift_task_dealloc_specific + 104
8   libswift_Concurrency.dylib       0x23791ce08 asyncLet_finish_after_task_completion + 88
9   StripePaymentSheet               0x10746dd4d partial apply for closure #1 in static PaymentSheetLoader.load(mode:configuration:analyticsHelper:integrationShape:isUpdate:completion:) + 1
10  StripePaymentSheet               0x1070b1a65 thunk for @escaping @isolated(any) @callee_guaranteed @async () -> (@out A) + 1
11  StripePaymentSheet               0x1070b20fd partial apply for thunk for @escaping @isolated(any) @callee_guaranteed @async () -> (@out A) + 1
12  libswift_Concurrency.dylib       0x237920555 completeTaskWithClosure + 1

Xcode console output right before the crash:

[Stripe SDK]: GET "/v1/elements/sessions" 200 req_...
[Stripe SDK]: GET "/v1/payment_methods" 200 req_...
[Stripe SDK]: GET "/v1/customers/cus_..." 200 req_...
V1 LOG ANALYTICS: mc_load_succeeded
freed pointer was not the last allocation

Flutter version:
3.41.0

Xcode version:
Xcode (Apple Silicon) 26.4
Release 17E192
24 Mar 2026
macOS 26.2+
Swift 6.3 (6.3.0.123.5)

[Tom3652]

I have received an email from Stripe telling to upgrade the Stripe iOS SDK when running with Xcode 26.4 :

 

[SmitKmph]

I am facing same issue

[remonh87]

Stripe released a version last night containing a fix for this. We hope to sync with the changes the coming weeks and release a fix. Be careful with just bumping the sdk this can cause bindings being out of sync and the sdk not to work.

[HyperJames]

Update:
The PR 2375 does fix this issue.

However for anyone waiting for the PR to be merged and a new version released on pub.dev, you can follow these steps on your Flutter project as a temporary work-around whilst developing (although I wouldn't recommend pushing to production):

1. pubspec.yaml
   Update your pubspec so you load in the specific PR branch like this:

dependencies:
  flutter_stripe: ^12.4.0

dependency_overrides
  stripe_ios:
    git:
      url: https://github.com/sebastienkothe/flutter_stripe.git
      ref: fix/bump-stripe-ios-sdk-25.9
      path: packages/stripe_ios

2. Clean the cache and reload:
   Run the following commands in terminal:

flutter clean
flutter pub get
cd iOS
rm -rf Pods Podfile.lock
pod install --repo-update
cd ..

Whilst this is happening, keep an eye on the terminal. You'll see the following:

downloading dependancies
...
Installing Stripe (25.9.0)
Installing StripeApplePay (25.9.0)
Installing StripeCore (25.9.0)
Installing StripeFinancialConnections (25.9.0)
Installing StripeIssuing (25.9.0)
Installing StripePaymentSheet (25.9.0)
Installing StripePayments (25.9.0)
Installing StripePaymentsUI (25.9.0)
Installing StripeUICore (25.9.0)
...
Generating Pods project
Integrating client project
Pod installation complete!

3. Check your podfile.lock
   Check your podfile.lock for the following (to ensure your project has downloaded the correct version):

...
  - Stripe (25.9.0):
    - StripeApplePay (= 25.9.0)
    - StripeCore (= 25.9.0)
    - StripeIssuing (= 25.9.0)
    - StripePayments (= 25.9.0)
    - StripePaymentsUI (= 25.9.0)
    - StripeUICore (= 25.9.0)
...

4. Run on a real physical device -or- simulator

I personally tested this on a real device and a simulator and it worked / solved the original issue of the payment sheet causing an iOS crash. However as noted above, I do not recommend using this work around for production purposes. However it should unblock teams whilst developing and working on projects.

[parulgarg004]

Facing the same issue.

[PeterHueer]

Update: The PR 2375 does fix this issue.

However for anyone waiting for the PR to be merged and a new version released on pub.dev, you can follow these steps on your Flutter project as a temporary work-around whilst developing (although I wouldn't recommend pushing to production):

1. pubspec.yaml
   Update your pubspec so you load in the specific PR branch like this:

dependencies:
  flutter_stripe: ^12.4.0

dependency_overrides
  stripe_ios:
    git:
      url: https://github.com/sebastienkothe/flutter_stripe.git
      ref: fix/bump-stripe-ios-sdk-25.9
      path: packages/stripe

2. Clean the cache and reload:
   Run the following commands in terminal:

flutter clean
flutter pub get
cd iOS
rm -rf Pods Podfile.lock
pod install --repo-update
cd ..

Whilst this is happening, keep an eye on the terminal. You'll see the following:

downloading dependancies
...
Installing Stripe (25.9.0)
Installing StripeApplePay (25.9.0)
Installing StripeCore (25.9.0)
Installing StripeFinancialConnections (25.9.0)
Installing StripeIssuing (25.9.0)
Installing StripePaymentSheet (25.9.0)
Installing StripePayments (25.9.0)
Installing StripePaymentsUI (25.9.0)
Installing StripeUICore (25.9.0)
...
Generating Pods project
Integrating client project
Pod installation complete!

3. Check your podfile.lock
   Check your podfile.lock for the following (to ensure your project has downloaded the correct version):

...
  - Stripe (25.9.0):
    - StripeApplePay (= 25.9.0)
    - StripeCore (= 25.9.0)
    - StripeIssuing (= 25.9.0)
    - StripePayments (= 25.9.0)
    - StripePaymentsUI (= 25.9.0)
    - StripeUICore (= 25.9.0)
...

4. Run on a real physical device -or- simulator

I personally tested this on a real device and a simulator and it worked / solved the original issue of the payment sheet causing an iOS crash. However as noted above, I do not recommend using this work around for production purposes. However it should unblock teams whilst developing and working on projects.

Does not work.. Does it work your flutter app? Still crashing

[gopalkohli]

Update: The PR 2375 does fix this issue.

However for anyone waiting for the PR to be merged and a new version released on pub.dev, you can follow these steps on your Flutter project as a temporary work-around whilst developing (although I wouldn't recommend pushing to production):

1. pubspec.yaml
   Update your pubspec so you load in the specific PR branch like this:

dependencies:
  flutter_stripe: ^12.4.0

dependency_overrides
  stripe_ios:
    git:
      url: https://github.com/sebastienkothe/flutter_stripe.git
      ref: fix/bump-stripe-ios-sdk-25.9
      path: packages/stripe

2. Clean the cache and reload:
   Run the following commands in terminal:

flutter clean
flutter pub get
cd iOS
rm -rf Pods Podfile.lock
pod install --repo-update
cd ..

Whilst this is happening, keep an eye on the terminal. You'll see the following:

downloading dependancies
...
Installing Stripe (25.9.0)
Installing StripeApplePay (25.9.0)
Installing StripeCore (25.9.0)
Installing StripeFinancialConnections (25.9.0)
Installing StripeIssuing (25.9.0)
Installing StripePaymentSheet (25.9.0)
Installing StripePayments (25.9.0)
Installing StripePaymentsUI (25.9.0)
Installing StripeUICore (25.9.0)
...
Generating Pods project
Integrating client project
Pod installation complete!

3. Check your podfile.lock
   Check your podfile.lock for the following (to ensure your project has downloaded the correct version):

...
  - Stripe (25.9.0):
    - StripeApplePay (= 25.9.0)
    - StripeCore (= 25.9.0)
    - StripeIssuing (= 25.9.0)
    - StripePayments (= 25.9.0)
    - StripePaymentsUI (= 25.9.0)
    - StripeUICore (= 25.9.0)
...

4. Run on a real physical device -or- simulator

I personally tested this on a real device and a simulator and it worked / solved the original issue of the payment sheet causing an iOS crash. However as noted above, I do not recommend using this work around for production purposes. However it should unblock teams whilst developing and working on projects.

Worked for me

one change
in dependency_overrides, I used path: packages/stripe_ios

dependency_overrides:
stripe_ios:
git:
url: https://github.com/sebastienkothe/flutter_stripe.git
ref: fix/bump-stripe-ios-sdk-25.9
path: packages/stripe_ios

[PeterHueer]

Worked for me after i change my release xcode version to 26.3

[HyperJames]

Worked for me

one change in dependency_overrides, I used path: packages/stripe_ios

dependency_overrides: stripe_ios: git: url: https://github.com/sebastienkothe/flutter_stripe.git ref: fix/bump-stripe-ios-sdk-25.9 path: packages/stripe_ios

Yeah good spot @gopalkohli - I've updated my original reply to include the corrected dependancy override ;-)