CVE-2026-94545

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.8% (54th percentile of EPSS-scored CVEs). 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, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 5.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Satori is a library to convert HTML and CSS to SVG. Starting in version 0.0.27 and prior to version 0.33.5, Satori does not properly escape certain values before including them in generated SVG output. This can allow crafted values to be interpreted as SVG markup. The impact depends on how the generated SVG is consumed. Version 0.33.5 contains a patch. No complete workaround exists besides upgrading. Applications that cannot immediately upgrade should not render attacker-controlled content with Satori.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100CISA SSVC

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
Severity53% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 30, 2026

Last Modified

September 30, 2026

Advisory Details (6)

Auto-updated Oct 2, 2026
Patch available. Sources: github_commit, github_release, github, github_pr.
github Patch Available

Improper escaping in Satori-generated SVG · Advisory · vercel/satori · GitHub

https://github.com/vercel/satori/security/advisories/GHSA-wx4j-mvgx-mqwp
github_pr Patch Available

fix: Harden SVG serialization

Patch available: vercel/satori 0.33.5 (PR #814 merged 2026-09-22)

https://github.com/vercel/satori/pull/814
github_commit Patch Available

commit 26a52affc031 (vercel/satori)

Patch available: vercel/satori 0.33.5 (contains commit 26a52affc031)

https://github.com/vercel/satori/commit/26a52affc031216fee5882b6e965c8dbc7ac1782
github Patch Available

Remote Code Execution in next/og ImageResponse · Advisory · vercel/next.js · GitHub

https://github.com/vercel/next.js/security/advisories/GHSA-vcvr-r3jv-pc5j
github_release Patch Available

v16.3.6

Patch available: vercel/next.js v16.3.6

https://github.com/vercel/next.js/releases/tag/v16.3.6
github_commit Patch Available

commit 868fad38690d (vercel/next.js)

Patch available: vercel/next.js v16.3.6 (contains commit 868fad38690d)

https://github.com/vercel/next.js/commit/868fad38690d72088868f299fa2bef339b26838e

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 10× 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.

  1. 2026-10-03 18:19 UTCEG score recompute
  2. 2026-10-03 14:26 UTCEPSS rescore
  3. 2026-10-02 18:52 UTCEG score recompute
  4. 2026-10-02 17:57 UTCEPSS rescore
  5. 2026-10-01 19:51 UTCEPSS rescore
  6. 2026-09-30 16:24 UTCEG score recompute
  7. 2026-09-30 15:53 UTCEG score recompute
  8. 2026-09-30 15:37 UTCEG score recompute
  9. 2026-09-30 15:02 UTCEG score recompute
  10. 2026-09-30 15:01 UTCMITRE cvelistV5first tracked

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCEQSTLab/CVE-2026-94545
    First seen Sep 29, 2026

    Next.js RCE

    Open source ↗
  • GitHub PoCHassham1/CVE-2026-94545-nextjs-og-poc
    First seen Sep 23, 2026

    CVE-2026-94545 / GHSA-vcvr-r3jv-pc5j — Next.js next/og ImageResponse SVG injection (Satori, GHSA-wx4j-mvgx-mqwp): isolated Docker validation lab with vulnerable (16.3.5) vs patched (16.3.6) controls, non-destructive Python scanner with pixel-level PNG evidence, and root-cause analysis of the upstream Satori fix. Authorized security research only.

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-94545?
CVE-2026-94545 is a medium vulnerability published on September 30, 2026. Satori is a library to convert HTML and CSS to SVG. Starting in version 0.0.27 and prior to version 0.33.5, Satori does not properly escape certain values before including them in generated SVG output. This can allow crafted values to be interpreted as SVG markup. The impact depends on how the…
When was CVE-2026-94545 disclosed?
CVE-2026-94545 was first published on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-94545 actively exploited?
CVE-2026-94545 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-94545?
CVE-2026-94545 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-94545?
A fix for CVE-2026-94545 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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