CVE-2026-23885

MEDIUMNVD 9.96.4▼
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.4 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 65% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this week
6.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Alchemy is an open source content management system engine written in Ruby on Rails. Prior to versions 7.4.12 and 8.0.3, the application uses the Ruby eval() function to dynamically execute a string provided by the resource_handler.engine_name attribute in Alchemy::ResourcesHelper#resource_url_proxy. The vulnerability exists in app/helpers/alchemy/resources_helper.rb at line 28. The code explicitly bypasses security linting with # rubocop:disable Security/Eval, indicating that the use of a dangerous function was known but not properly mitigated. Since engine_name is sourced from module definitions that can be influenced by administrative configurations, it allows an authenticated attacker to escape the Ruby sandbox and execute arbitrary system commands on the host OS. Versions 7.4.12 and 8.0.3 fix the issue by replacing eval() with send().

CVSS v3
9.9
EG Score
6.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

January 19, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Jul 27, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

Authenticated Remote Code Execution (RCE) via eval injection in ResourcesHelper · Advisory · AlchemyCMS/alchemy_cms · GitHub

https://github.com/AlchemyCMS/alchemy_cms/security/advisories/GHSA-2762-657x-v979
github_release Patch Available

v8.0.3

Patch available: AlchemyCMS/alchemy_cms v8.0.3

https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v8.0.3
github_release Patch Available

v7.4.12

Patch available: AlchemyCMS/alchemy_cms v7.4.12

https://github.com/AlchemyCMS/alchemy_cms/releases/tag/v7.4.12
github_commit Patch Available

commit 563c4ce45bf5 (AlchemyCMS/alchemy_cms)

Patch available: AlchemyCMS/alchemy_cms v8.0.11 (contains commit 563c4ce45bf5)

https://github.com/AlchemyCMS/alchemy_cms/commit/563c4ce45bf5813b7823bf3403ca1fc32cb769e7
github_commit

commit 55d03ec600fd (AlchemyCMS/alchemy_cms)

Fix landed in AlchemyCMS/alchemy_cms commit 55d03ec600fd — awaiting tagged release

https://github.com/AlchemyCMS/alchemy_cms/commit/55d03ec600fd9e07faae1138b923790028917d26

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFixed inDependents
alchemy_cms8.0.0 ... 8.0.2 (6 versions)8.0.3—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 52× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 129 total refreshes for this CVE.

  1. 2026-07-27 01:39 UTCOSV refresh
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Frequently asked(5)

What is CVE-2026-23885?
CVE-2026-23885 is a medium vulnerability published on January 19, 2026. Alchemy is an open source content management system engine written in Ruby on Rails. Prior to versions 7.4.12 and 8.0.3, the application uses the Ruby eval() function to dynamically execute a string provided by the resourcehandler.enginename attribute in Alchemy::ResourcesHelper#resourceurlproxy.…
When was CVE-2026-23885 disclosed?
CVE-2026-23885 was first published in the National Vulnerability Database on January 19, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23885 actively exploited?
CVE-2026-23885 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 65.1% of all scored CVEs.
What is the CVSS score of CVE-2026-23885?
CVE-2026-23885 has a CVSS v3 base score of 9.9 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.4.
How do I remediate CVE-2026-23885?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23885, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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