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Fencer Vulns
high 7.8

CVE-2023-33733 json

Reportlab vulnerable to remote code execution

published 2023-06-05 3 y ago modified 2026-07-07 4 mo ago also GHSA-9q9m-c65c-37pq , PYSEC-2026-1871 , EUVD-2023-1765

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Reportlab up to v3.6.12 allows attackers to execute arbitrary code via supplying a crafted PDF file.

Patch / fix

  • pypi reportlab 3.6.13
  • python-reportlab Debian 12 3.6.12-1+deb12u1
  • python-reportlab Debian 14, Debian 13 3.6.13-1

debian advisories DEBIAN-CVE-2023-33733

  • python-reportlab Ubuntu 20.04 LTS 3.5.34-1ubuntu1.1
  • python-reportlab Ubuntu 22.04 LTS 3.6.8-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2023-33733

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-reportlab SLE Workstation Extension 12 SP5 2.7-3.13.1
  • python-reportlab SLE Module for Package Hub 15 SP5, SLE Module for Package Hub 15 SP4, openSUSE Leap 15.5 +1 more 3.4.0-150000.3.9.1

suse advisories SUSE-SU-2023:2688-1SUSE-SU-2023:2561-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-33733 updated cvss 7.8

python-reportlab: remote code execution via supplying a crafted PDF file

  • Red Hat Quay v3 quay/quay-rhel8 v3.9.1-6, quay/clair-rhel8 v3.9.1-1, quay/quay-builder-rhel8 v3.9.1-1, quay/quay-operator-rhel8 v3.9.1-2, quay/quay-operator-bundle v3.9.1-7, quay/quay-bridge-operator-rhel8 v3.9.1-2, +4 more
    fixed: vendor fix RHBA-2023:4974
  • Red Hat Enterprise Linux 6 python-reportlab Red Hat Enterprise Linux 7 python-reportlab Red Hat Enterprise Linux 8 python-reportlab, python3-reportlab
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

2.12% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/c53elyas/CVE-2023-33733 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
GitHub 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi reportlab
<3.6.13
3.6.13

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.