CVE-2019-19450

CRITICALNVD 9.89.8—

9.8

paraparser in ReportLab before 3.5.31 allows remote code execution because start_unichar in paraparser.py evaluates untrusted user input in a unichar element in a crafted XML document with '

CVSS v3

9.8

EG Score

9.8(medium)

EPSS

92.9%

KEV

Not listed

Published

September 20, 2023

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated May 25, 2026

Patch available.

generic

[SECURITY] Fedora 40 Update: python-reportlab-4.2.0-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CHMCB2GJQKFMGVO5RWHN222NQL5XYPHZ/

generic

[SECURITY] Fedora 39 Update: python-reportlab-4.2.0-1.fc39 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HADPTB3SBU7IVRMDK7OL6WSQRU5AFWDZ/

generic

[SECURITY] Fedora 40 Update: python-reportlab-4.2.0-1.fc40 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHMCB2GJQKFMGVO5RWHN222NQL5XYPHZ/

generic Patch Available

[SECURITY] [DLA 3590-1] python-reportlab security update

https://lists.debian.org/debian-lts-announce/2023/09/msg00037.html

generic

reportlab-mirror/CHANGES.md at master · MrBitBucket/reportlab-mirror · GitHub

https://github.com/MrBitBucket/reportlab-mirror/blob/master/CHANGES.md

generic

CVE-2019-19450 - Pastebin.com

https://pastebin.com/5MicRrr4

Patch Availability(6)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	python-reportlab-0:3.4.0-8.el8_8.1	2023-10-17	redhat
redhat	python-reportlab-0:3.4.0-6.el8_1.5	2023-10-17	redhat
redhat	python-reportlab-0:3.4.0-8.el8_2.1	2023-10-17	redhat
redhat	python-reportlab-0:3.4.0-8.el8_6.1	2023-10-17	redhat
redhat	python-reportlab-0:3.4.0-8.el8_4.1	2023-10-17	redhat
redhat	python-reportlab-0:2.5-11.el7_9	2023-10-10	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

PyPI(1)

Package	Vulnerable range	Fixed in	Dependents
reportlab	2.0 ... 3.5.9 (33 versions)	3.5.31	—

Weakness Classification(1)

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

CWE-91XML Injection

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-24 17:22 UTCEG score recompute
2026-05-24 17:22 UTCVendor advisory

Frequently asked(5)

What is CVE-2019-19450?

CVE-2019-19450 is a critical vulnerability published on September 20, 2023. paraparser in ReportLab before 3.5.31 allows remote code execution because start_unichar in paraparser.py evaluates untrusted user input in a unichar element in a crafted XML document with '<unichar code="' followed by arbitrary Python code, a similar issue to CVE-2019-17626.

When was CVE-2019-19450 disclosed?

CVE-2019-19450 was first published in the National Vulnerability Database on September 20, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-19450 actively exploited?

CVE-2019-19450 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-19450?

CVE-2019-19450 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-19450?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-19450, 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-2019-19450

Explore →

Is Your Infrastructure Affected by CVE-2019-19450?

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

Start Free Scan →Browse All CVEs

CVE-2019-19450

Published

Last Modified

Advisory Details (6)

[SECURITY] Fedora 40 Update: python-reportlab-4.2.0-1.fc40 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 39 Update: python-reportlab-4.2.0-1.fc39 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 40 Update: python-reportlab-4.2.0-1.fc40 - package-announce - Fedora mailing-lists

[SECURITY] [DLA 3590-1] python-reportlab security update

reportlab-mirror/CHANGES.md at master · MrBitBucket/reportlab-mirror · GitHub

CVE-2019-19450 - Pastebin.com

Patch Availability(6)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-19450?

Same vendor

Same CWE

CVE-2019-19450

📅 Published

🔄 Last Modified

📋 Advisory Details (6)

[SECURITY] Fedora 40 Update: python-reportlab-4.2.0-1.fc40 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 39 Update: python-reportlab-4.2.0-1.fc39 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 40 Update: python-reportlab-4.2.0-1.fc40 - package-announce - Fedora mailing-lists

[SECURITY] [DLA 3590-1] python-reportlab security update

reportlab-mirror/CHANGES.md at master · MrBitBucket/reportlab-mirror · GitHub

CVE-2019-19450 - Pastebin.com

Patch Availability(6)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-19450?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (6)

Frequently asked(5)

Related CVEs(same vendor + same CWE)