Invalid URL error after updating to 4.3.0

[cswilliams]

Describe the bug

I just updated from 4.2.1 to 4.3.0 and now the action is failing with this error for me:

Run aws-actions/configure-aws-credentials@59b441846ad109fa4a1549b73ef4e149c4bfb53b
  with:
    role-to-assume: arn:aws:iam::XXXXXXXXXX:role/GHA-app-build
    role-duration-seconds: 1800
    aws-region: us-east-2
    audience: sts.amazonaws.com
    output-env-credentials: true
  env:
    POSTGRES_IMAGE: XXXXXXXX
    REDIS_IMAGE: XXXXXXXX
    RUNNER_TOOL_CACHE: /opt/hostedtoolcache
    RUNS_ON_HOME: /runs-on
    RUNS_ON_VERSION: XXXXXXXX
    RUNS_ON_AGENT_BINARY: /runs-on/agent
    RUNS_ON_AGENT_ARCH: arm64
    RUNS_ON_AGENT_USER: runner
    RUNS_ON_AMI_NAME: XXXXXXXX
    RUNS_ON_AWS_REGION: us-east-2
    RUNS_ON_AWS_AZ: us-east-2a
    RUNS_ON_ENV_CUSTOM_FILE: /runs-on/env.custom
    RUNS_ON_INSTANCE_ID: i-0900f69c18dad3634
    RUNS_ON_INSTANCE_LAUNCHED_AT: 2025-08-04T22:28:16Z
    RUNS_ON_INSTANCE_LIFECYCLE: on-demand
    RUNS_ON_INSTANCE_TYPE: c8g.16xlarge
    RUNS_ON_STACK_NAME: runs-on
    RUNS_ON_RUNNER_NAME: XXXXXXXX
    RUNS_ON_S3_BUCKET_CACHE: XXXXXXXXXXXX
    ACTIONS_RUNNER_HOOK_JOB_STARTED: /runs-on/pre.sh
    ACTIONS_RUNNER_HOOK_JOB_COMPLETED: /runs-on/post.sh
    BASE_FROM: XXXXXXXX
    BUILDER_FROM: XXXXXXXX
    BUILDER_BUNDLER_FROM: XXXXXXXX
    BASE_BUILDER_NEED_BUILD: false
    BUILDER_BUNDLER_NEED_BUILD: false
    RAILS_ENV: test
    RUBY_VERSION: 3.4.4
    DEVOPS_APP_NAME: XXXXXXXX
    BASE_CACHE_IMAGE: XXXXXXXX
    BASE_CACHE_IMAGE_NAME: XXXXXXXX
    BUILDER_CACHE_IMAGE: XXXXXXXX
    BUILDER_CACHE_IMAGE_NAME: XXXXXXXX
    BUILDER_BUNDLER_CACHE_IMAGE: XXXXXXXX
    BUILDER_BUNDLER_CACHE_IMAGE_NAME: XXXXXXXX
    TEST_BUILDER_BUNDLER_CACHE_IMAGE: XXXXXXXX
    STAGING_PROD_BUILDER_BUNDLER_CACHE_IMAGE: XXXXXXXX
    BRANCH_NAME: renovate/github-actions-dependencies
    BRANCH_NAME_NORMALIZED: renovate_github-actions-dependencies
    PREBUILT_IMAGE_TAG: _0_0_prebuilt
    IMAGE_TAG: _16735486396_2_renovate_github-actions-dependencies
Configuring proxy handler for STS client
Error: Invalid URL

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

Action should not throw an error

Current Behavior

Action throws an "Invalid URL" error and fails.

Reproduction Steps

Here's how we're invoking it:

      - name: Configure AWS Credentials for Building Test Image
        uses: aws-actions/configure-aws-credentials@59b441846ad109fa4a1549b73ef4e149c4bfb53b # v4.3.0
        with:
          role-to-assume: arn:aws:iam::XXXXXXXX:role/MyRole
          role-duration-seconds: 1800
          aws-region: us-east-2

Also wanted to note that we run this on a self hosted runner on EC2 (utilizing runs-on, using their standard ubuntu latest image)

Possible Solution

I do not have any proxy env vars set so I'm not sure why it's printing the line about the proxy handler now. I also added a step right before the action runs to print out the env and confirmed there are no proxy related env vars set.

I'm guessing this issue might be related to this recent change: cbea708

Additional Information/Context

Starting appearing after upgrading from 4.2.1 to 4.3.0

[kellertk]

@cswilliams There was a bug with the initial 4.3.0 release that was fixed earlier today. Instead of 59b4418, please use d0834ad. We've since updated the v4.3.0 release tag to point to the correct commit.

59b4418 -> Original 4.3.0 release
cbea708 -> Fix
d0834ad -> Updated 4.3.0 release

[cswilliams]

@kellertk thanks, that worked. unfortunately, our dependency update system (renovate) has cached the bad sha to the 4.3.0 tag so I had to update it manually. Hopefully they'll flush their cache at some point since I have like 30 more repos that need to be updated lol.

[github-actions]

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If you need more assistance, please either tag a team member or open a new issue that references this one.

[kellertk]

@cswilliams 👍 Given that, we'll cut a quick point release to make sure people are on the right tag