CVE-2026-55073

MEDIUMPre-NVD 6.26.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 91% 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, secondary
Elevated
6.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.2Exploit: Elevated riskExposed: 0

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

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive url_fetcher and pass attacker-influenced values to HTML.write_pdf() can have the restriction bypassed through the xmp_metadata or stylesheets options. In weasyprint/pdf/init.py, xmp_metadata calls select_source() without the document url_fetcher, allowing an accessible local file to be read and embedded verbatim in the output PDF. In weasyprint/document.py, stylesheets constructs CSS() without the document url_fetcher, allowing local or internal resource loading and propagating the permissive fetcher through nested CSS imports and url() references. The stylesheets channel applies fetched resources but does not by itself disclose stylesheet comments verbatim. This issue is fixed in version 70.0.

CVSS v3
6.2
EG Score
6.2(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity62% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 16, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
Patch available. Sources: github_commit, github_release, github.
github_release Patch Available

v70.0

Patch available: Kozea/WeasyPrint v70.0

https://github.com/Kozea/WeasyPrint/releases/tag/v70.0
github_commit Patch Available

commit 289e278439b0 (Kozea/WeasyPrint)

Patch available: Kozea/WeasyPrint v70.0 (contains commit 289e278439b0)

https://github.com/Kozea/WeasyPrint/commit/289e278439b017cd9263b4cd4727026987f86443
github Patch Available

Server-Side Request Forgery (SSRF) in weasyprint · Advisory · Kozea/WeasyPrint · GitHub

https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-jf6q-chmf-3h3v

Vendor Advisories for CVE-2026-55073(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
weasyprint0.1 ... 69.0 (119 versions)70.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 11× 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. 2026-09-19 13:19 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 14:32 UTCEG score recompute
  4. 2026-09-17 19:31 UTCEPSS rescore
  5. 2026-09-16 16:56 UTCEG score recompute
  6. 2026-09-16 15:30 UTCEG score recompute
  7. 2026-09-16 15:04 UTCEG score recompute
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-14 17:28 UTCEG score recompute
  11. 2026-09-09 18:24 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-55073?
CVE-2026-55073 is a medium vulnerability published on September 9, 2026. WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive urlfetcher and pass attacker-influenced values to HTML.writepdf() can have the restriction bypassed through the xmpmetadata or stylesheets options. In…
When was CVE-2026-55073 disclosed?
CVE-2026-55073 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55073 actively exploited?
CVE-2026-55073 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 91.1% of all scored CVEs.
What is the CVSS score of CVE-2026-55073?
CVE-2026-55073 has a CVSS v3 base score of 6.2 (NVD).
How do I remediate CVE-2026-55073?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55073, 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-55073

Explore →

Is Your Infrastructure Affected by CVE-2026-55073?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs