PatchSiren

PatchSiren cyber security CVE debrief

CVE-2023-46035 fnando CVE debrief

The svg_optimizer gem before 0.3.0 for Ruby performs entity expansion on untrusted documents, which could potentially lead to security issues related to denial of service or arbitrary code execution. This CVE was published on 2026-09-14T06:16:54.500Z and was last modified on 2026-09-22T20:00:03.713Z. Defenders should assess exposure and prioritize verification and potential updates. The vulnerability is related to XML entity expansion, which can lead to security issues if not properly handled.

Vendor
fnando
Product
svg_optimizer
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-14
Original CVE updated
2026-09-22
Advisory published
2026-09-14
Advisory updated
2026-09-22

Who should care

Defenders responsible for Ruby applications using the svg_optimizer gem should assess exposure and prioritize verification and potential updates.

Why it matters

Defenders should prioritize verifying the version of the svg_optimizer gem in use and updating to version 0.3.0 or later if necessary due to potential security issues related to entity expansion on untrusted documents.

  • Verify the version of the svg_optimizer gem in use
  • Update to version 0.3.0 or later if necessary
  • Monitor for potential security issues related to entity expansion on untrusted documents

Technical summary

The svg_optimizer gem before 0.3.0 for Ruby performs entity expansion on untrusted documents. This could potentially lead to security issues related to denial of service or arbitrary code execution. The vulnerability is related to XML entity expansion, which can lead to security issues if not properly handled. Defenders should prioritize verifying the version of the svg_optimizer gem in use and updating to version 0.3.0 or later if necessary.

Defensive priority

Defenders should prioritize verifying the version of the svg_optimizer gem in use and updating to version 0.3.0 or later if necessary.

Recommended defensive actions

  • Verify the version of the svg_optimizer gem in use
  • Update to version 0.3.0 or later if necessary
  • Monitor for potential security issues related to entity expansion on untrusted documents

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further investigation is needed to determine the full scope of the issue.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-46035 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-46035

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2023-46035 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-46035

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.