CVE-2024-6923

MEDIUMNVD 5.55.5—Elevated

5.5

There is a MEDIUM severity vulnerability affecting CPython.

The email module didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 47.0%
KEV: Not listed

Published

August 1, 2024

Last Modified

April 15, 2026

References (15)

cna@pythonhttps://github.com/python/cpython/commit/06f28dc236708f72871c64d4bc4b4ea144c50147
cna@pythonhttps://github.com/python/cpython/commit/097633981879b3c9de9a1dd120d3aa585ecc2384
cna@pythonhttps://github.com/python/cpython/commit/4766d1200fdf8b6728137aa2927a297e224d5fa7
cna@pythonhttps://github.com/python/cpython/commit/4aaa4259b5a6e664b7316a4d60bdec7ee0f124d0
cna@pythonhttps://github.com/python/cpython/commit/b158a76ce094897c870fb6b3de62887b7ccc33f1
cna@pythonhttps://github.com/python/cpython/commit/f7be505d137a22528cb0fc004422c0081d5d90e6
cna@pythonhttps://github.com/python/cpython/commit/f7c0f09e69e950cf3c5ada9dbde93898eb975533
cna@pythonhttps://github.com/python/cpython/issues/121650
cna@pythonhttps://github.com/python/cpython/pull/122233
cna@pythonhttps://mail.python.org/archives/list/security-announce@python.org/thread/QH3BUOE2DYQBWP7NAQ7UNHPPOELKISRW/
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/08/01/3
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/08/02/2
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00005.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240926-0003/

Patch Availability(18)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	python2.7-minimal (2.7.17-1~18.04ubuntu1.13+esm7) @ bionic	2026-05-21	ubuntu
ubuntu	python3.12-venv (3.12.3-1ubuntu0.2) @ noble	2026-05-21	ubuntu
redhat	service-interconnect/skupper-site-controller-rhel9:1.5.5-4	2024-12-16	redhat
redhat	service-interconnect/skupper-site-controller-rhel9:1.4.7-3	2024-11-21	redhat
redhat	python39:3.9-8080020240911100614.93c2fc2f	2024-10-15	redhat
redhat	python3.11-0:3.11.2-2.el9_2.6	2024-10-01	redhat
redhat	service-interconnect/skupper-site-controller-rhel9:1.5.5-3	2024-09-30	redhat
redhat	service-interconnect/skupper-site-controller-rhel9:1.4.7-2	2024-09-26	redhat
redhat	python39:3.9-8040020240902080505.63cd9eba	2024-09-25	redhat
redhat	python3-0:3.6.8-67.el8_10	2024-09-24	redhat
redhat	python3.12-0:3.12.5-2.el8_10	2024-09-24	redhat
redhat	python3.11-0:3.11.9-7.el8_10	2024-09-24	redhat
redhat	python3.9-0:3.9.16-1.el9_2.8	2024-09-23	redhat
redhat	python39:3.9-8060020240916062113.6a631399	2024-09-23	redhat
redhat	python3.9-0:3.9.18-3.el9_4.5	2024-09-03	redhat
redhat	python3.12-0:3.12.1-4.el9_4.3	2024-09-03	redhat
redhat	python3.11-0:3.11.7-1.el9_4.5	2024-09-03	redhat
redhat	python39-devel:3.9-8100020240826142629.d47b87a4	2024-08-28	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.

Weakness Classification(1)

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

CWE-94Improper Control of Generation of Code (Code Injection)

All Vendor Advisories

(19)

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 15× in last 7d / 20× 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.

2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-07 15:24 UTCEPSS rescore
2026-06-07 15:24 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:39 UTCOSV refresh
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore

Frequently asked(5)

What is CVE-2024-6923?

CVE-2024-6923 is a medium vulnerability published on August 1, 2024. There is a MEDIUM severity vulnerability affecting CPython. The email module didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized.

When was CVE-2024-6923 disclosed?

CVE-2024-6923 was first published in the National Vulnerability Database on August 1, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-6923 actively exploited?

CVE-2024-6923 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-6923?

CVE-2024-6923 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2024-6923?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-6923, 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

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CVE-2024-6923

Published

Last Modified

References (15)

Patch Availability(18)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-6923?

Same vendor

Same CWE

CVE-2024-6923

📅 Published

🔄 Last Modified

🔗 References (15)

Patch Availability(18)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-6923?

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References (15)

Frequently asked(5)

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