Back to CVE records
Medium 5.5Published Jun 23, 2026
CVE-2026-0864When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and…
Updated under an hour ago ()
Does this affect you?
It affects python. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Start free and add your stack
Free account, 1 product
When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-74
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Aug 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
python python python:python | before 3.10.21; from 3.11.0 before 3.11.16; from 3.12.0 before 3.12.14; from 3.13.0 before 3.13.15; from 3.14.0 before 3.14.7; 3.15.0; 3.15.0; 3.15.0; and 8 more ranges | NVD |
References
- https://github.com/python/cpython/commit/0adb386f6e68eb2e73d32e19f235d012df009528patch
- https://github.com/python/cpython/commit/12dcbd74d3563016a8cb8c47e4898889f34f74ddpatch
- https://github.com/python/cpython/commit/274de100bbf4345bd0c23ef5b446722e9e636908patch
- https://github.com/python/cpython/commit/5858e42c539dac8394636a6e9b30472b8994851fpatch
- https://github.com/python/cpython/commit/71f2e02a52d47417a6fd69f456346cd8aa7aca98patch
- https://github.com/python/cpython/commit/aaf850fd333cd89e9aada03d92aaa788a6cb1bb8patch
- https://github.com/python/cpython/commit/db4a157c790479710a1a840d7937c5c815a6f8b6patch
- https://github.com/python/cpython/issues/143927issue-tracking, patch
- https://github.com/python/cpython/pull/151559issue-tracking, patch
- https://mail.python.org/archives/list/security-announce@python.org/thread/CV4NE6AFCRJL7XQOHX7J5TSDHUWVWGJS/mailing-list, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.