# Apollo Router Core: Browser Bug Enables Bypass of XS-Search Prevention via Read-Only Cross-Site Request Forgery

Source: https://junglewise.ai/threats/apollo-router-core-browser-bug-enables-bypass-of-xs-search-prevention-5a0d5dcd  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-03-26  
License: CC BY 4.0 with a link back

Severity: medium · CVSS 4 · Published 2026-03-26

Apollo Router Core: Browser Bug Enables Bypass of XS-Search Prevention via Read-Only Cross-Site Request Forgery

Technologies: [apollo-router (crates.io)](https://junglewise.ai/threats/technologies/apollo-router). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Medium severity, with a CVSS score of 4, published 26 March 2026.

**Which products and versions are affected?** apollo-router (crates.io) SEMVER:introduced=2.11.0,fixed=2.12.1.

**Is there a fix for This vulnerability?** Yes. apollo-router (crates.io): upgrade to 2.12.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run apollo-router (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- apollo-router (crates.io): upgrade to 2.12.1 or later

  ```sh
  cargo update -p apollo-router
  ```


## Affected products

- apollo-router (crates.io) SEMVER:introduced=2.11.0,fixed=2.12.1

## Related threats

- [Apollo Router Affected by an Access Control Bypass on Polymorphic Types](https://junglewise.ai/threats/cve-2025-64173-apollo-router-affected-by-an-access-control-bypass-on-polymorphic)
- [Apollo Router Improperly Enforces Renamed Access Control Directives](https://junglewise.ai/threats/cve-2025-64347-apollo-router-improperly-enforces-renamed-access-control)
- [Apollo Router Query Validation Vulnerable to Excessive Resource Consumption via Named Fragment Processing](https://junglewise.ai/threats/cve-2025-32380-apollo-router-query-validation-vulnerable-to-excessive-resource)
- [Apollo Router Operation Limits Vulnerable to Bypass via Integer Overflow](https://junglewise.ai/threats/cve-2025-32033-apollo-router-operation-limits-vulnerable-to-bypass-via-integer)
- [Apollo Router Query Planner Vulnerable to Excessive Resource Consumption via Named Fragment Expansion](https://junglewise.ai/threats/cve-2025-32034-apollo-router-query-planner-vulnerable-to-excessive-resource)