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jasnowconnorshea
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Updated/renamed existing iodine advisory (#1062)
* Updated/renamed existing iodine advisory * Remove blank line in CVE-2026-41146.yml * Update CVE-2026-41146.yml with new URL and removed extra blank chars in notes: * Update gems/iodine/CVE-2026-41146.yml Co-authored-by: Connor Shea <[email protected]> --------- Co-authored-by: Connor Shea <[email protected]>
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---
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gem: iodine
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cve: 2026-41146
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ghsa: 2x79-gwq3-vxxm
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url: https://github.com/boazsegev/facil.io/security/advisories/GHSA-2x79-gwq3-vxxm
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url: https://nvd.nist.gov/vuln/detail/CVE-2026-41146
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title: Uncontrolled resource consumption and loop with unreachable
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exit condition in facil.io and downstream iodine ruby gem
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date: 2026-04-14
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`fio_json_parse` can enter an infinite loop when it encounters a
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nested JSON value starting with `i` or `I`. The process spins in
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user space and pegs one CPU core at ~100 instead of returning a
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parse error. Because `iodine` vendors the same parser code, the
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issue also affects `iodine` when it parses attacker-controlled JSON.
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parse error.
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Because `iodine` gem vendors the same parser code, the issue also
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affects `iodine` gem when it parses attacker-controlled JSON.
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The smallest reproducer found is `[i`. The quoted-value form that
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originally exposed the issue, `[""i`, reaches the same bug because
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- Verified on tag / gem version `v0.7.58`
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- The gem vendors a copy of the vulnerable parser in
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`ext/iodine/fio_json_parser.h`
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cvss_v4: 8.7
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related:
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url:
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- https://nvd.nist.gov/vuln/detail/CVE-2026-41146
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- https://github.com/boazsegev/iodine/releases/tag/v0.7.58
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- https://github.com/boazsegev/iodine/commit/0855989d74098d838b972520835cfc256bc479bc
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- https://github.com/boazsegev/facil.io/commit/5128747363055201d3ecf0e29bf0a961703c9fa0
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- https://github.com/boazsegev/facil.io/security/advisories/GHSA-2x79-gwq3-vxxm
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- https://github.com/advisories/GHSA-2x79-gwq3-vxxm
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notes: |
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- FYI: iodine commit above contains the unreleased patch.
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- Found GHSA's `patched_versions:` field is "0.7.59" but never released.

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