VDB
GHSA-h46w-ffvp-4pw5
GHSA-h46w-ffvp-4pw5
PUBLISHED
CVSS 7.5 HIGH
When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| wolfi | python-3.11 | 0, 0, 0 |
| chainguard | python-3.11 | 0, 0, 0 |
| wolfi | python-3.13 | 0, 0, 0 |
| wolfi | python-3.14 | 0, 0, 0 |
| chainguard | python-3.14 | 0, 0, 0 |
| chainguard | python-3.13 | 0, 0, 0 |
Timeline
- Mar 16, 2026 CVE Published
- May 1, 2026 Security Advisory
- Aug 5, 2026 CVE Updated
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-4224 advisory
- https://github.com/python/cpython/pull/145987 url
- https://github.com/python/cpython/commit/642865ddf4b232da1f3b1f7abcfa3254c4bfe785 url
- https://github.com/python/cpython/commit/e0a8a6da90597a924b300debe045cdb4628ee1f3 url
- https://github.com/python/cpython/issues/145986 url
- https://github.com/python/cpython/commit/196edfb06a7458377d4d0f4b3cd41724c1f3bd4a url
- https://github.com/python/cpython/commit/eb0e8be3a7e11b87d198a2c3af1ed0eccf532768 url
- http://www.openwall.com/lists/oss-security/2026/03/16/4 url
- https://github.com/python/cpython/commit/24ce88b285f56ee11626cf5e472af3cd8cc7c621 url
- https://github.com/python/cpython/commit/af856a7177326ac25d9f66cc6dd28b554d914fee url
- https://mail.python.org/archives/list/security-announce@python.org/thread/5M7CGUW3XBRY7II4DK43KF7NQQ3TPZ6R url