[1.0] [CVE-2026-41316] Bump erb to 4.0.4.1 (#456) - #458
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### Part of elastic/security#12737 Resolves **CVE-2026-41316** (high) — `@_init` deserialization guard bypass in ERB via `def_module` / `def_method` / `def_class`. Fixed in ERB **4.0.4.1**. #### Changes - **`Gemfile` / `Gemfile.lock`**: pin `erb` to `4.0.4.1` (overrides JRuby 9.4's default `erb` 2.2.3). - **`NOTICE.txt`**: regenerated for the new dependency (and transitive `cgi`). #### Testing - Lint: no offenses. - Full test suite: **690 examples, 16 pending**; one flaky locking spec unrelated to erb (passes on retry). - Confirmed runtime ERB version is `4.0.4.1`. ### Scanner A/B (`CVE-2026-41316`) | Tool | Before | After | |------|--------|-------| | Trivy | reported | clear | | Snyk | reported | clear | ### Checklists #### Pre-Review Checklist - [x] This PR does NOT contain credentials of any kind, such as API keys or username/passwords (double check `crawler.yml.example` and `elasticsearch.yml.example`) - [x] This PR has a meaningful title - [x] This PR links to all relevant GitHub issues that it fixes or partially addresses - [x] this PR has a thorough description - [ ] Covered the changes with automated tests - [x] Tested the changes locally - [x] Added a label for each target release version (example: `v0.1.0`) - [ ] Considered corresponding documentation changes - [ ] Contributed any configuration settings changes to the configuration reference - [x] Ran `make notice` if any dependencies have been added #### Changes Requiring Extra Attention - [x] Security-related changes (encryption, TLS, SSRF, etc) ### Release Note Bump ERB to 4.0.4.1 to resolve CVE-2026-41316 (deserialization guard bypass). Made with [Cursor](https://cursor.com) Co-authored-by: Cursor <cursoragent@cursor.com>
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Jan-Kazlouski-elastic
approved these changes
Jul 23, 2026
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Backports the following commits to 1.0: