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CVE-2024-6923
Email header injection due to unquoted newlines
Medium5.5EPSS 1.1%
- Published
- Updated
- Reserved
- Assigned by
- PSF
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L |
| NVDNVD · Deferred | 3.1 | Medium5.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 1.1% · top 34% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
Python Software Foundation · CPython
- affected < 3.8.20
- affected 3.9.0 – < 3.9.20
- affected 3.10.0 – < 3.10.15
- affected 3.11.0 – < 3.11.10
- affected 3.12.0 – < 3.12.5
- affected 3.13.0a1 – < 3.13.0rc2
References (15)
- https://github.com/python/cpython/pull/122233 (opens in a new tab)patch
- https://github.com/python/cpython/issues/121650 (opens in a new tab)issue-tracking
- https://mail.python.org/archives/list/[email protected]/thread/QH3BUOE2DYQBWP7NAQ7UNHPPOELKISRW/ (opens in a new tab)vendor-advisory
- https://github.com/python/cpython/commit/4766d1200fdf8b6728137aa2927a297e224d5fa7 (opens in a new tab)patch
- https://github.com/python/cpython/commit/4aaa4259b5a6e664b7316a4d60bdec7ee0f124d0 (opens in a new tab)patch
- https://github.com/python/cpython/commit/06f28dc236708f72871c64d4bc4b4ea144c50147 (opens in a new tab)patch
- https://github.com/python/cpython/commit/b158a76ce094897c870fb6b3de62887b7ccc33f1 (opens in a new tab)patch
- https://github.com/python/cpython/commit/f7be505d137a22528cb0fc004422c0081d5d90e6 (opens in a new tab)patch
- https://github.com/python/cpython/commit/f7c0f09e69e950cf3c5ada9dbde93898eb975533 (opens in a new tab)patch
- https://github.com/python/cpython/commit/097633981879b3c9de9a1dd120d3aa585ecc2384 (opens in a new tab)patch
- http://www.openwall.com/lists/oss-security/2024/08/01/3 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2024/08/02/2 (opens in a new tab)
- https://security.netapp.com/advisory/ntap-20240926-0003/ (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00005.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2024-6923)Record last updated .