Fixed fast-xml-parser vulnerability via npm override
Public
Fixed fast-xml-parser vulnerability via npm override
Agent
Pi
Model
Claude Opus 4.5 (latest)
Started
Jan 31, 10:27 PM
Messages60
Downloads0
Identified vulnerable fast-xml-parser dependency.
UnderstandAdded npm override for patched version.
EditCleaned npm cache and regenerated lockfile.
SetupConfirmed zero vulnerabilities and correct version installed.
VerifyCommitted and pushed fix changes.
Cleanup
➜ pi-mono git:(main) npm install
pi-monorepo@0.0.3 prepare husky
added 1 package, and audited 562 packages in 2s
95 packages are looking for funding
run npm fund for details
17 high severity vulnerabilities
To address issues that do not require attention, run: npm audit fix
To address all issues (including breaking changes), run: npm audit fix --force
Run npm audit for details.
figure out what causes the security warning and tell me how to fix it
The user wants me to figure out what's causing the 17 high severity vulnerabilities in their npm packages. Let me run npm audit to get the details.
>cd /Users/badlogic/workspaces/pi-mono && npm audit 2>&1The vulnerability is in fast-xml-parser versions 4.3.6 - 5.3.3. It's a transitive dependency from @aws-sdk/client-bedrock-runtime. All 17 vulnerabilities are the same issue propagating through the AWS SDK dependency tree.
The fix is to upgrade @aws-sdk/client-bedrock-runtime to version 3.893.0 or later, which will pull in a fixed version of fast-xml-parser.
Let me check which package has the AWS SDK dependency.
>cd /Users/badlogic/workspaces/pi-mono && rg '"@aws-sdk/client-bedrock-runtime"' --include '*.json' -A1Let me use the correct ripgrep syntax.
>cd /Users/badlogic/workspaces/pi-mono && rg '@aws-sdk/client-bedrock-runtime' -g '*.json'So the package is @aws-sdk/client-bedrock-runtime version ^3.966.0 in packages/ai/package.json, and the installed version is 3.980.0 according to package-lock.json.
The audit says the fix is available via npm audit fix --force and would install version 3.893.0. But wait, that doesn't make sense - 3.893.0 is lower than 3.966.0 which is our current minimum.
Let me re-read the audit output. It says:
fast-xml-parser 4.3.6 - 5.3.3 is vulnerable@aws-sdk/xml-builder >=3.894.0 depends on vulnerable versionsThis is confusing. Let me check the actual installed versions and see what's going on.
>cd /Users/badlogic/workspaces/pi-mono && npm ls fast-xml-parser 2>&1So the installed version is fast-xml-parser@5.2.5, which falls in the vulnerable range 4.3.6 - 5.3.3. The fix would be to update to fast-xml-parser version > 5.3.3.
Looking at the advisory: https://github.com/advisories/GHSA-37qj-frw5-hhjh
The fix is:
@aws-sdk/client-bedrock-runtime to a version that pulls in a fixed fast-xml-parserfast-xml-parserLet me check what the latest version of fast-xml-parser is and if AWS SDK has released a fix.
>npm view fast-xml-parser versions --json 2>&1 | tail -20So 5.3.4 is the fixed version. The vulnerability is in 4.3.6 - 5.3.3, and 5.3.4 fixes it.
The AWS SDK hasn't updated their dependency yet. The solution is to add an npm override to force fast-xml-parser to use version 5.3.4.
Root Cause: fast-xml-parser versions 4.3.6 - 5.3.3 have a RangeError DoS vulnerability (GHSA-37qj-frw5-hhjh).
The dependency chain:
@aws-sdk/client-bedrock-runtime@3.980.0 └─ @aws-sdk/core@3.973.5 └─ @aws-sdk/xml-builder@3.972.2 └─ fast-xml-parser@5.2.5 ← vulnerableVersion 5.3.4 has the fix, but the AWS SDK hasn't updated their dependency yet.
Fix: Add an npm override to force the patched version. In your root package.json, add:
"overrides": { "fast-xml-parser": "5.3.4"}Then run npm install to apply it.
i suppose we should update the aws sdk then
The user wants to update the AWS SDK to get the fix. Let me check what the latest version is.
>npm view @aws-sdk/client-bedrock-runtime version 2>&1The installed version is already the latest (3.980.0). The AWS SDK team hasn't released a version with the fixed fast-xml-parser yet. So the only solution right now is to use an npm override.
Let me double-check by looking at what versions of @aws-sdk/xml-builder exist and if any use fast-xml-parser 5.3.4.
>npm view @aws-sdk/xml-builder versions --json 2>&1 | tail -10The AWS SDK is already at the latest version (3.980.0 for client-bedrock-runtime, 3.972.2 for xml-builder). The fix for fast-xml-parser (5.3.4) was released, but AWS hasn't updated their dependency yet.
So the override is the only option for now.
You're already on the latest AWS SDK version (3.980.0). The AWS team hasn't updated their fast-xml-parser dependency yet.
The override is the only fix until AWS releases an update. Want me to add it to the root package.json?
ok, fix by overriding
The user wants me to add the override to the root package.json. Let me read it first to see its current structure.
I need to add an "overrides" field to the package.json. I'll add it after the "dependencies" section.
Now let me run npm install to apply the override and verify the vulnerability is fixed.
>cd /Users/badlogic/workspaces/pi-mono && npm install 2>&1Still showing vulnerabilities. Let me check what's happening. Maybe the override didn't take effect. Let me check the installed version.
>cd /Users/badlogic/workspaces/pi-mono && npm ls fast-xml-parser 2>&1The override didn't work. This might be because we need to delete the package-lock.json and node_modules to force the override to take effect.
The lockfile is pinning the old version. Need to regenerate it:
>cd /Users/badlogic/workspaces/pi-mono && rm -rf node_modules package-lock.json && npm install 2>&1npm had issues with corrupted state. Let me clean everything more thoroughly and try again.
NPM cache issue. Let me clean up more thoroughly:
>cd /Users/badlogic/workspaces/pi-mono && rm -rf node_modules packages/*/node_modules && npm cache clean --force && npm install 2>&1The override worked. Now let me verify the fast-xml-parser version.
Done. The override worked:
>cd /Users/badlogic/workspaces/pi-mono && npm ls fast-xml-parser 2>&1The "invalid" message is expected with overrides - npm is just noting that the installed version doesn't match what the package requested. But the important thing is fast-xml-parser@5.3.4 is now installed and there are 0 vulnerabilities.
The fix is complete. The package.json now has the override and it resolves the security issue.
The "invalid" warning is expected with overrides (npm notes it doesn't match the package's requested version). The important part: 0 vulnerabilities and fast-xml-parser@5.3.4 is installed.
Fixed in package.json with:
"overrides": { "fast-xml-parser": "5.3.4"}ok, cmmit and push this
The user wants me to commit and push the package.json change. I need to follow the git rules - only add the specific files I changed.
>cd /Users/badlogic/workspaces/pi-mono && git add package.json package-lock.json && git commit -m "fix: override fast-xml-parser to 5.3.4 to resolve CVE" && git pushCommit and push successful.
Done. Committed and pushed.
@aws-sdk/client-bedrock-runtime@3.980.0 └─ @aws-sdk/core@3.973.5 └─ @aws-sdk/xml-builder@3.972.2 └─ fast-xml-parser@5.2.5 ← vulnerable"overrides": { "fast-xml-parser": "5.3.4"}"overrides": { "fast-xml-parser": "5.3.4"}